Ed Glenn is cleared of a murder charge thanks to an alibi found by Matt Helm. But when Glenn announces he's marrying the victim's sister, Helm becomes suspicious.
When an investigator friend of Matt is found dead Helm is determined to find the perpetrator. But he gets too close to a record piracy scam and Matt is marked for the next killing.
There's a contract out on Matt's ex-colleague Karen Ashley. She goes into hiding and asks Helm for help. But the hit man on her case, Pike, develops a personal grudge against Matt.
Matt investigates the death of a research scientist who was found frozen to death after an apparent skiing accident. Carl, Betz, Joanna Barnes, Diana Ewing, Whit Bissel.
A diamond theft goes awry and the two partners in crime split up. Wounded Jed hides out with his sister, a nurse, Meanwhile his partner in crime Paul asks an old friend for help: Matt Helm.