Donald Hamilton

When the big man in Washington assigned Matt Helm to ride shotgun on a top-secret mission in Norway, Helm wanted to know why. But this was a need-to-know deal, at least until his partner - a woman posing as his mistress - was killed....

When Matt Helm is dispatched to Los Angeles to investigate the shooting of an agent, it wasn't just an assignment - it was personal....

Matt Helm, one-time special agent for the American government during the Second World War, has left behind his violent past to raise a family in Santa Fe, New Mexico until a former colleague turns rogue and kidnaps his daughter....

People are vanishing without a trace. And the disappearances are getting closer to home—the next likely target is Mac, Matt Helm’s shrewd old boss. To get to the bottom of the mystery, Helm follows two beguiling and treacherous women, who lead him all the way to his ancestral home—Scandinavia....

Take a gorgeous companion for a leisurely sail on a beautiful yacht. Sounds like easy duty for Matt Helm—except that the last three captains of the yacht died under mysterious circumstances.

Beautiful, intelligent, fresh out of prison—Madeleine Ellershaw is Matt Helm’s latest case. Madeleine may have been imprisoned as a spy, but Helm soon realizes that her story isn’t so simple....

Matt Helm is unexpectedly rich, and he doesn’t like it. Twenty thousand mysterious dollars appear in his bank account, but this is no time for celebration. Another secret agent with an unexplained surplus is murdered, and Helm figures he better work out who his “benefactor” is....

It was a double mission this time: First, to terminate a top-notch enemy agent. Second, to locate the missing fiancee of a Texas oil millionaire, lost in the Bermuda Triangle. Somehow these two cases were connected, but it wasn't clear how until more high-profile types disappeared....

The survivor of a plane crash wakes up in a hospital in Canada, his memory a blank. Then in walks Kitty, a gorgeous woman, who tells him that he is Paul Madden, a photographer and her fiancé. Not bad. Except that a man on the phone keeps calling him Matt Helm....

A prim young lady needs a favor: help her father beat a bum drug rap. But when Dad’s boat detonates outside Miami Harbor, Matt discovers that young Amy isn’t as innocent as she looks....

Matt Helm has got a good thing going with Elly. So an outfit of terrorists really have picked the wrong woman when they kidnap her in order to leverage Matt into carrying out an assassination. Now, Helm finds himself in Costa Verde with one thing on his mind: revenge….

At a funeral of an old friend, Matt Helm takes a trip down memory lane and sparks a romance that he thought was safely locked in the past. But with old feelings resurfacing, other things Helm thought were buried are coming back to haunt him....

A quiet mission of assassination is no sweat for legendary agent Matt Helm - until a shapely foreign agent he never got around to finishing off lures him into a strange trek....

A year after having been reactivated as a spy, Matt Helm receives a message from his ex-wife asking for his aid. The threat is an enemy agent named Martel, disguised as a mob hit man....

It was not a peaceful way to die, but there was nothing Matt Helm could do for his fellow agent. He had found him in a Canadian motel room - his once-handsome face eaten away, corroded by acid....

Matt Helm is on vacation in Mexico with nothing on his mind except fishing when some joker tries to shoot him in the back. Naturally, it was no accident - when secret agents get shot at, it never is. So Helm has to go back to work....

This time Mac has gone too far. For Helm to impersonate a Communist courier to whom he bears no resemblance is suicide - and that isn't all....

Matt Helm is puzzled. He's been sent to Mexico to investigate the sighting of a flying saucer, but Helm doesn't believe in little green men....

In order to foil a mass assassination plot, Matt Helm must undertake his most dangerous mission yet: matrimony....

A ruthless South American drug lord has a plan to bring the United States to its knees. A group of renegade American agents has plans to smash the kingpin and his cartel, by any means necessary.