Constable Evan Evans is almost done planning his wedding. Just as he is ready to relax, Evans meets a hiker whose girlfriend has gone missing on Mt. Snowdon. A search for the girl yields no trace but instead turns up a bunker complete with chains and handcuffs. Are the two related? And if so, where is the girl being held?
A series of clues make Evan and the police realize that they are dealing with a clever but twisted mind. Then a second person vanishes and this time Evans knows the victim: his fiance. Her disappearance makes Evans realize that the culprit’s vendetta might be quite personal-and directed at Evans himself.