Motherhood is Murder* by Diana Orgain.
Kate Connolly really doesn't want to return to her mind-numbing administrative job, now that she's got lovely baby Laurie at home. In the first book of the series, Bundle of Trouble, Kate got her first taste of investigating, and now is ready to set out her shingle as a private investigator. She's even got business cards.
Two things she doesn't have are a license, and experience. Her hopes of talking former policeman, now P.I. Albert Galigani into sponsoring her are dashed when he has a heart attack.
Then, a member of her Mommy Group is killed, and another member asks Kate to look into it. Kate really, really doesn't want to go back to her old job, so she decides to give it a try. How dangerous can a group of new mothers be, anyway?
Chapter openings are hilarious to-do lists, and there are a few Lucy Ricardo moments, such as when Kate sits down during a business meeting and her girdle explodes. This is amusing mystery with an appealing protagonist is perfect for a quick, light read.
*The author kindly sent me this book to review.