The Corpse Came Calling — Brett Halliday

Mike Shayne is accused of homicide after a dying man stumbles into his office

When an old friend calls begging to see him immediately, Mike Shayne is surprised to say the least. He hasn't set eyes on Jim Lacy in ten years, and time has not been kind. Jim's face is deeply wrinkled, and his eyes are glazed. His skin is gray -- and there is blood seeping through his shirt. Jim mutters a few last words as he collapses on Shayne's office floor. His stomach is filled with lead and he is dead before he hits the ground.
 
Shayne reaches into Lacy's pocket and pulls out his wallet. Emptying it, he finds  $200 -- enough for a retainer fee. Mike Shayne has never let a client's murder go unpunished, and he will not rest until he catches the men who shot Jim Lacy and sent him to die. But first he will have to convince the police that he was not the man who pulled the trigger.

The Corpse Came Calling is the 6th book in the Mike Shayne Mysteries, but you may enjoy reading the series in any order.