In a heady cocktail of passion and poison, who can you really trust? When Lizzie Aspinall and her sister meet for cocktails in a high-rise bar, the last thing she's expecting is to spend the night in the arms of the nameless man in room 423. As a one-night stand with a stranger turns into a steamy affair with a dedicated detective, Lizzie finds herself in the sights of a stalker. Ben Finneran has spent ten years pursuing a ruthless serial killer who poisons victims at random before disappearing into the shadows. He wants to believe that the attraction he and Lizzie share is just physical, but when they find themselves falling for each other, is Ben unwittingly leading a murderer straight to her door? Pursued by the past and threatened by the present, who can Lizzie and Ben really trust?