Oliver Ritchie was the mentally ill doctor who performed experiments on his colleagues. He moved into Scotty (Kiel McNaughton) and Shanti's (Nisha Madhan) spare room but gained attention with his strange habits. He helped Shanti when she fell sick but Scotty believed his healing was borderline cruelty. Shanti soon died and Oliver moved in with Libby (Fleur Saville) and Gerald (Harry McNaughton). He began to date Libby and conned her into spending a week with him at home, where he purposely infected her with dengue fever and recorded the results. Scotty discovered Oliver was behind his wives death and freed Libby before savagely beating Oliver. In December, Gerald announced that Oliver had been imprisoned for his crimes. Nicole Miller first appeared in September 2009 as a potential love interest for Maia Jeffries (Anna Jullienne). She is portrayed by Sally Martin. Howard Carter was the grandfather of a patient in the hospital who quickly fell for receptionist Yvonne Jeffries (Alison Quigan). Yvonne was not interested in Howard but started seeing him to hide her affections for the much younger Ben Goodall (Shaun Edwards-Brown). Yvonne and Howard were about to set out on a holiday when Yvonne learned Ben had been injured and left Howard devastated when she admitted she was not interested in him. Sean Thomas Mitchell was the manipulative brother of Kieran Mitchell (Adam Rickitt). He proved a thorn in Kieran and Sophie's (Kimberley Crossman) romance when he arrived under the name "Sid", so as to claim ownership of "The IV" bar. Kieran paid his ignorant brother to leave, but he returned shortly after, having started a strip club business. In 2010 Sean soon realised that Kieran had killed Morgan Braithwaite (Bonnie Soper) and took the blame for the killing from the police shortly before fleeing the country. Kieran heard the news that Sean had died in July 2010 only to discover days later Sean was alive and being held captive by White Dragon (Matt Sunderland) as a lure for Kieran. Sean and Kieran escaped however and ended up on a cliffside where White Dragon fell to his death. Kieran admitted to the death of Morgan to her sister Nicole (Sally Martin) and ex-husband Gerald Tippett (Harry McNaughton) before sacrificing himself so that Sean lived. Sean was later sent back to the United Kingdom. The role was created specifically for Morris after he auditioned for a separate role.