A model's (Cindy Morgan) secret admirer may have kidnapped her and murdered her manager-lover.
A visit from Andy's mother (Shelley Winters) causes extra trouble as the detectives deal with a prostitute (Donna Dixon) who saw a murder.
A former Chicago partner (Tige Andrews) arrives and takes over Mac and Andy's lives during a murder investigation.
Mac and Andy's case involves ancient Hawaiian customs, island gods and an idol that predicts their doom; guest Fritz Weaver.
New York police officers (Lorna Patterson, Brianne Leary) pose as Mac and Andy's wives to investigate an island honeymoon resort.
While probing a military base's black-market operation, Andy believes he has found his brother reported killed in Vietnam.
A vigilante force targets a murderer freed by the courts; guests Peter Donat, Nancy Grahn.
To smoke out a businessman's murderer, Andy and Mac pose as high rollers on a private island that houses a high-stakes casino.
During a Los Angeles-to-Hawaii yacht race, Mac and Andy stumble on a case they think might prove their worth as detectives.
Mac and Andy investigate a bizarre case involving an exploding volleyball, a dead athlete, several beauties and a luxury resort.
A disillusioned Chicago police officer shanghais his partner to Hawaii where they help Honolulu authorities crack a drug-smuggling operation.