Marcus Walwyn has it all. Young, good-looking and reasonably wealthy, he oozes confidence from every pore – seemingly the most eligible of bachelors. But when he spots a young woman on the Underground his quickly developed obsession becomes increasingly sinister. Something, or someone, is guiding his actions and leading him to cold-blooded murder.

A chilling insight into the workings of a calculating killer’s mind.

This gritty and uncompromising thriller stars Peter Davison (All Creatures Great & Small and Doctor Who), James Bolam (The Biederbecke Tapes and The Missing Postman) and newcomer Gideon Turner.