Finger Lickin' Fifteen by Janet Evanovich

In the latest book in the Stephanie Plum series, Lula accidentally witnesses the decapitation of celebrity chef Stanley Chipotle. Worried that the killers are after her, she tries to stay lay low and, with Stephanie's help, identify the culprits and collect the million dollars of reward money. Stephanie, meanwhile, is on the outs with Morelli and is helping Ranger find out who's trying to ruin his home security business. Will Stephanie's working with Ranger put even more of a wedge between her and Morelli? There's lot of fire, farts, and laughter as Stephanie and Co. get into their usual trouble.