From the cover:
The Rimley Rendezvous was the kind of back-street bistro where a tired businessman could drop in for a pick-up, no questions asked. Deep carpets and subdued lights gave the place an air of clandestine class. And solicitous waiters catered to the customer's every whim. All these comforts added up to a steep cover charge, especially since blackmail figured as the major part of the tab.
It was a very lucrative business...until a murderer cut into the profits...and left his ax in Donald Lam's car. The team of Cool and Lam are at their fast-talking, fast-moving best in this tough tale of suicide, blackmail and murder.