I'm not even sure what to say. This book is funny and along the lines of the Stephanie Plum novels by Janet Evanovich. It's easy to see that comparison, so I won't do it for you. However, I thought this was a little convoluted.
Cat DeLuca owns the Pants On Fire Private Detective Agency. While spying for a woman named Rita who claims her husband is cheating, she runs right smack into the guy (Chance). He says this woman is not his wife, but an explosion stops him from explaining more. The FBI says he's dead, but Cat has memories of him after the explosion and is sure he's still alive. And he seems to be, but when she has witnesses he disappears. She also has a concussion from the explosion, so everyone in her very large family thinks she's delusional. Meanwhile, as Cat keeps looking into Chance and the case Rita put her on, Rita turns up dead. Lots of people are now on Cat's tail (ha ha..) and she pisses a lot of people off in the meantime. She gets into super trouble and mega danger. Tino, a local restaurant owner, provides her with a bodyguard by the name of Max. He's hunky and fast and strong, and he poses as Cat's boyfriend to keep her family appeased. More drama happens while Cat continues to look into Rita and Chance and some stolen diamonds.
Based in Chicago, this novel could easily take place in Stephanie Plum's Trenton. Chance could somewhat be Morelli in One For The Money, and Max, though not quite the same, could stand in for Ranger. The whole bodyguard thing. Anyway, I guess this was written by three sisters, and the next one comes out this year. I will check it out.