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"Walter&amp;#039;s visions of that &amp;quot;strange man&amp;quot; persist on Fringe and his old doctor at St Claire&amp;#039;s - Bruce Sumner - arrives at the lab for a catch-up.  Walter insists that he has recovered and is no longer suffering from any hallucinations, but catches a glimpse of Peter&amp;#039;s face in Sumner&amp;#039;s reflective clipboard. Meanwhile, a young boy named Aaron is being chased by a pair of bullies and runs into an underground tunnel to escape. The bullies corner him, but are soon overcome by something horrible inside the tunnel, and a terrified Aaron runs for his life. At FBI HQ, Olivia is drawing a man&amp;#039;s face, but quickly hides the sketch when Lincoln arrives. Olivia wants to know how her colleague is dealing with life on the Fringe team, but he insists that he has not been &amp;quot;freaked out&amp;quot; by recent events. Broyles summons the two agents - the bodies of the bullies have been discovered. The boys were only missing for a matter of hours, yet their bodies are already in an advanced stage of decomposition. Inside the tunnel, Lincoln spots another set of sneaker treads - a potential witness or another victim? One of the corpses is transported to the Harvard lab and Broyles takes the opportunity to check in on Walter. Dr Sumner has apparently voiced some concerns about his patient&amp;#039;s well-being, but Walter insists that he is mentally fit.  He begins to tell Broyles that he requires both bodies to carry out a thorough investigation, but quickly becomes distracted - Peter&amp;#039;s voice keeps ringing in his ears. &amp;quot;I&amp;#039;m not losing my mind!&amp;quot; cries Walter - but Broyles and Astrid seem unconvinced. Olivia and Lincoln track down Aaron after learning that the two victims were bullying him. Aaron&amp;#039;s taken to Harvard and, as he sits happily sketching shapes, Olivia explains to Broyles that the boy is currently staying with a neighbour as his father is gone and his mother is abroad for work. At Walter&amp;#039;s behest, Broyles orders Olivia and Lincoln to retrieve the second victim&amp;#039;s body from the morgue.   At the lab, Walter runs blood tests on Aaron, but when the boy starts playing with a toy soldier, Walter loses his temper. He quickly apologises, explaining that the toy used to belong to his son, who died at a young age... Astrid summons Walter to examine the corpse at the lab and a quick test reveals that the body is pulling high levels of oxygen out of the air. The mould on the corpse&amp;#039;s rib cage begins to expand and a panicked Walter orders Astrid to help him transfer the body to an incubation case. Once safely contained, the body explodes, releasing spores. &amp;quot;I&amp;#039;m starting to believe that it was an aggressive form of fungi that killed the other boys,&amp;quot; explains Walter - but Olivia and Lincoln have been sent to retrieve the second body!  Astrid calls Olivia to warn her but it&amp;#039;s already too late - the spores are released inside the morgue. Within a few hours, the fungi has spread throughout the morgue, with Olivia, Lincoln and Broyles forced to wear protective suits to investigate.  Walter explains that the fungi is able to release neuro-toxin cells to paralyse a host, and then absorbs nutrition from the body - explaining the high level of decomposition. A strong dose of UV light should eradicate the fungi, but Olivia believes that the fungus colony back at the tunnel will require something more drastic. &amp;quot;I&amp;#039;m thinking flame-throwers\u2026&amp;quot; Since Aaron has no sign of fungal infection, he&amp;#039;s able to go home, but he doesn&amp;#039;t want to leave - his neighbour barely speaks to him. Walter sympathises with the boy and tells him he can remain at the lab a while longer, but warns him: &amp;quot;I can&amp;#039;t promise that I&amp;#039;ll have any time for entertaining, you understand. I&amp;#039;m a very busy man!&amp;quot;   Utter nonsense, of course - Walter is soon making the two of them a batch of his famous strawberry milkshake. As they share the drink, Aaron asks how Walter&amp;#039;s son died. Walter explains that Peter was very sick as a young boy and that a cure was discovered too late to prevent his death. Walter crossed over to an alternate universe to retrieve a second Peter who suffered from the same malady, but the frozen lake that served as the bridge between universes was unstable. The ice broke and the alternate Peter drowned. &amp;quot;I lost him all over again,&amp;quot; laments Walter. Olivia and Lincoln head back to the tunnel, accompanied by a team who prepare to destroy the fungi. Floodlights expose the fungus, but at the same time, Aaron complains of a blinding brightness. The team begins burning up the fungus with flame-throwers and Aaron develops a high fever. Walter realises what&amp;#039;s happening and calls Olivia - &amp;quot;Stop what you&amp;#039;re doing!&amp;quot; he yells. &amp;quot;You&amp;#039;re killing the boy!&amp;quot; Aaron is placed in an ice bath, but his fever is still dangerously high. Olivia notes that the tunnel is covered in sketches of shapes - similar to the drawings that Aaron made in the lab. Aaron admits to Walter that he visited the tunnel many times before the encounter with the bullies. &amp;quot;I go there sometimes to get away,&amp;quot; he explains. &amp;quot;After a while, I would start to feel better - like I wasn&amp;#039;t alone.&amp;quot;  Walter reveals to Olivia and Lincoln that the fungus is a &amp;quot;single organism, one with rapidly evolving communication skills&amp;quot; enabling it to form a psychic bond with Aaron. Or, as Lincoln puts it, the whole fungus is &amp;quot;one big, giant brain&amp;quot;. Walter even nicknames the organism &amp;quot;Gus&amp;quot; - like fungus, geddit? Broyles contacts his agents - there&amp;#039;s been another attack, six miles from the tunnel. The fungus is spreading through the sewer line and needs to be eradicated. Walter insists that he needs more time to break the link between Aaron and Gus, ranting, &amp;quot;He&amp;#039;ll die! D&amp;#039;you hear me? You&amp;#039;re going to kill Peter!&amp;quot; Walter realises his mistake and falls silent. Broyles gives him two hours to break the link, barring any more attacks. As Olivia and Lincoln unite with their boss in the field, he explains that Nina and Massive Dynamic have supplied a potent toxin to destroy Gus.   Walter has isolated Gus&amp;#039;s brainwave - the link is centred somewhere inside Aaron&amp;#039;s pre-frontal lobe - but he still has no way to sever the link. Broyles is informed that the fungus has reached a subway platform in mid-town and tells Olivia: &amp;quot;We can&amp;#039;t contain this thing - we have to move on it now!&amp;quot; Olivia and Lincoln descend underground with a team of technicians, locating a central mass of the fungus in which to distribute the toxin. One technician injects the mass, but the fungus reacts violently and kill him. Lincoln also falls into Gus&amp;#039;s grasp, and the toxin has no effect. But back in the lab, Aaron loses consciousness. Walter has a brainwave, realising that a link to Gus is also present in the boy&amp;#039;s limbic system - the emotional centre of the brain. Aaron can affect Gus, just as the organism can affect him. Waking Aaron with a shot of epinephrine, Walter begs the boy to let go of his connection to the fungus, vowing to stick by his side. Aaron begins to stabilise and the two brainwaves separate. Underground, organism begins to die and Lincoln recovers. &amp;quot;[I&amp;#039;m] a little freaked out!&amp;quot; he tells Olivia. &amp;quot;You wanna talk about it?&amp;quot; Sometime later, Aaron prepares to leave the lab and Walter hands over Peter&amp;#039;s old toy soldier as a parting gift, promising to stay in touch. But as Astrid escorts Aaron to the hospital, Walter is once again plagued by visions of Peter. Desperate, he picks up a hammer and a sharp tool, plus a textbook containing instructions on how to perform a full-frontal lobotomy... Olivia returns to the lab and finds Walter in the process of hammering the tool into his own face! She stops him, but Walter is still distressed, fearing that he&amp;#039;s going insane. He explains that he keeps having visions of a young man, but Olivia reveals her sketch from the beginning of the episode - it&amp;#039;s Peter&amp;#039;s face. Olivia reveals that she drew the sketch from memory. &amp;quot;I&amp;#039;ve been seeing him in my dreams for the past three weeks,&amp;quot; she explains. But neither Olivia nor Walter have any clue who the man is. &amp;quot;A shared vision like this - it must be real!&amp;quot; says Walter. &amp;quot;And if he&amp;#039;s real, we have to find him!&amp;quot;  Observing Fringe \u2022 &amp;#039;Alone in the World&amp;#039; is a thoroughly enjoyable instalment of Fringe - there&amp;#039;s a strong &amp;#039;case of the week&amp;#039; but we also get some real movement on the Peter story arc. \u2022 This week&amp;#039;s Fringe glyphs spell out the word - R E B O R N. \u2022 Spotting the Observer - If you squint, you can just about spot the Observer walking in front of Harvard after Olivia and Lincoln first pick up Aaron from the school. \u2022 Is anyone else picking up hints of something more than friendship developing between Olivia and Lincoln? After all, alt-Lincoln is in love with Fauxlivia, so it&amp;#039;s not unprecedented. Could make things awkward when Peter returns! \u2022 Speaking of Pete, this episode clarifies that he wasn&amp;#039;t erased entirely - he died in both universes as a child, keeping the two sides balanced. The only reason alt-Peter (the one we know and love) ever survived was because of the Observer&amp;#039;s interference, saving him from the frozen lake. \u2022 Broyles mentioning Nina made this writer realise - she&amp;#039;s been entirely absent for the first three episodes! Isn&amp;#039;t Blair Brown supposed to be a series regular? Nina&amp;#039;s appeared less than Peter and she&amp;#039;s not even been wiped from existence. \u2022 As a final note, John Noble delivers a predictably brilliant performance this week. Another one for the Emmy board to completely ignore, then! "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/tv/fringe/review/a344735/fringe-alone-in-the-world-recap/>