Samson Segal, an unemployed 30-something, has taken to spying on his neighbours, particularly beautiful Gillian Ward. When Gillian's daughter comes home to an empty, locked house, Samson takes her in but finds himself venting his anger in his diary when his actions go unappreciated, unaware that his sister-in-law cracked his password long ago. When Gillian's husband is then murdered in his own home, Samson comes under intense scrutiny but the only man making any progress in the case shouldn't be working on it. Yet he's the only one who believes Samson is innocent.