Murder with a twist

In New York to attend a cousin's birthday gala, Nic and Nigel Martini look forward to cocktails with old friends and a pampered stay at the Ritz. Then the birthday girl's gold-digging husband goes missing, and Nige's condescending aunt begs former detective Nic to find sleazy Leo, despite the fact that it would be better for everyone if he just stayed lost. Now, assisted by Nigel and their Bullmastiff, Nic must hunt down the dirtiest Martini.