Gone Grandpa - Old School Mystery, #3

For fans of Carl Hiaasen and Harper Lin's Granny series - a fun and witty caper featuring diamonds, deceit . and double-crossing.   Retired super-spy Delphine Lougheed is nothing if not gracious, especially when family comes to town. So when Marge Flanders-the mother of her son-in-law and possible former jewel thief-announces she and her new boyfriend Willard are visiting Southern California for a trip to Disneyland, Delphine offers to pick them up from the airport. But Willard disappears without a trace right after deplaning, and Marge's vacation turns from fun to frantic quicker than you can say "giant diamond." Delphine would rather skip it all and go ballroom dancing, but now she must use the skills she honed during decades of espionage to help track Willard down.
She enlists the help of friend and fellow former super-spy Kenji Yamamoto, and the three of them set off for the not-so-seedy underbelly of Orange County. In the process of tracking down Willard, the trio discovers the love of Marge's life may not be who she thought he was. Worse, if they can't locate him, she'll end up having to pay-literally-for his transgressions. On the lookout for senior swimsuit influencers, inept bookies, and alimony-seeking biker ex-wives, Delphine, Kenji, and Marge search for their missing person.
But they just might uncover far more: the realization that it's never too late to find adventure . and lifelong friends.