Suzy Darling finally leaves her husband and moves into a new apartment. During her first day she encounters a man who seems totally disconnected with the world. She discovers his name is Henry and no one but she can hear or see him.
Suzy works to unravel the mystery of Henry's disappearance and death. Her friends become concerned at her increasingly erratic behavior and organize an intervention on her behalf to try and correct her growing instability.
Suzy continues to struggle with the antics of her ex-husband. At the same time she finds herself strangely attracted to Henry, as he begins to open her world to different situations and sensations.
Henry's existential angst continues to roar through his dreams and he wakes to find a shrine of sorts out the front of The Elysian: the call he sent out through the internet has been answered. Henry tries to convince a sceptical Suzy these fans should be encouraged when he catches sight of a bearded man in Suzy's dental surgery who drops lines that sound awfully familiar. This is none other than Zac Hannigan, tax lawyer and part-time rock journalist - bonafide chronicler of Henry's life - Suzy is surprised when Henry does not want him around. It seems Henry's memory is returning only for him to find there are things he'd rather forget.
When Henry and Suzy meet in a dream in Manchester, 1982, new possibilities for their relationship unleash an unspoken sexual tension that is played out through a series of dreams and unexpected encounters. Zac Hannigan continues his investigations into Henry's disappearance, focusing on the paternity of Suzy's son in the mistaken belief that Henry might be his father. Zac has an awkward encounter with Jonquil, who is pursuing her own dream - to become the next Mrs Darling, unaware that Suzy's ex-husband Steve is continuing his successful wooing of daughter Verity's primary school teacher, Viola Take, with surprising results.
Suzy and Henry's new found intimacy is making Suzy nervous. But thankfully for Suzy - although 'thankfully' is possibly too kind a word - a major distraction comes looming when an odd, officious little man turns up and starts poking around the apartments asking questions about ex-residents. His name is Adrian, and when Suzy handballs him to Rocco he takes it upon himself to delve rather deeply into the history of the building and its former tenants. Who is this man and what - or who - is he searching for?
Suzy faces the unpalatable reality of life with a ghostly stepson, Apollo, who has transformed into a filthy mouthed, badly behaved, overgrown baby, quickly making The Elysian uninhabitable for the residents. When he lures Elvis and Verity into the ghostly realm and great danger Suzy and Henry are forced to find a way to make him leave. They work together to find a solution while also battling their own demons - Henry is slapped in the face with his complete failures as a parent while Suzy has to contend with a love-struck Jonquil , full to the brim with the first flush of her romance with Zac, and the curiosity of Steve, who learns from their kids of the existence of a mysterious man in Suzy's life called Henry.
With Apollo vanquished, life returns to something like normality at the Darling-Mallet household, Henry accustomed to his role as invisible family member, while Suzy suffers strange symptoms of a mystery illness. When a patient dies in her dental chair and a yellow cab to The Other Side arrives out the front of The Elysian, Suzy is convinced it's proof of her imminent death. But Henry is sure. The time is coming for him to move on and say goodbye to the uptight dentist. Will he stay or will he go? That's the dilemma that Henry faces, and Suzy's sickness might just be a little bit more related to this than she would like to admit. Maybe, just maybe, she's lovesick.
