Death at the Dog Park :

Alyssa Higgins is new to motherhood, suburban life and dog ownership. When she takes her puppy to the dog park and learns of a cold case murder involving another young mother, she becomes intrigued. Enlisting the help of a friend from baby music class, Alyssa begins to snoop around her quiet neighborhood. What she discovers shocks her: she's living in a town full of secrets, intrigue and deception.