List of Kat &amp; Alfie: Redwater characters
Alfie Moon is played by Shane Richie. The character originally appeared in the soap opera "EastEnders" from 2002 to 2005, and 2010 to 2016. Before his departure from "EastEnders", he discovers he has a mass on his brain. Of Alfie's part in "Redwater", Richie said, "Alfie's journey is to help his wife find her son but at the same time he has his own dark secret which he's keeping." Richie later said, "For the first time in 15 years, [Alfie] questions himself as a father, a husband and as a life, it feels like it's coming to an end for him. [...] Alfie starts getting hallucinations and one in particular is quite harrowing."
Kat &amp; Alfie: Redwater
Daniel Kilkelly ("Digital Spy") called the first episode "atmospheric" and "gripping". He said, "While Kat shines in "Redwater", it's fair to say that Alfie seems a little bit lost and directionless in the first episode, with even scenes of him experiencing weird visions and nearly dying (twice!) seeming like time-fillers." He said the characters of Agnes and Dermott had "immediately caught our attention" but wondered if the show would appeal to viewers who are not "EastEnders" fans, saying "surely you have to be an "EastEnders" watcher to really care about Kat's quest for her son?" but said "for us it's a thumbs up if "Redwater" can keep up the suspense, surprises, gothic tone and sense of foreboding that sets it apart from "EastEnders"." The series was reviewed on BBC Radio 5 Live's "Afternoon Edition", where TV critic Emma Bullimore from "TV Times" said that it was "enjoyable" but more "soapy" and less "complex" than "Broadchurch", and said that viewers should not expect it to be like "EastEnders" or "Broadchurch" but should "accept it as a new thing", adding that it had good production values and deemed it a "worthy experiment". Sinéad Garvan from "Newsbeat", speaking at the same time, said that she found it "weird" seeing Kat and Alfie in a different setting and was more intrigued by the new characters but said that Kat and Alfie still had the same chemistry that they have in "EastEnders".