As Marti delves further into her family secrets with the help of Julian (Gale Harold), her bond with a mysterious record store employee, Deidre (AJ Michalka, “Secretariat” and J.J. Abrams’ upcoming “Super 8”), grows stronger. Meanwhile, Savannah (Ashley Tisdale) and Nasty Kathy (guest star Magda Apanowicz) clash over planning Charlotte’s (guest star Emma Lahana) baby shower, and Savannah finds herself in a bit of trouble at school, giving her no other option but to ask her parents for help. In the episode, Marti and Deidre perform a guitar duet of “My Refrigerator Broke,” another exclusive original by Dan Bern, and Bob Dylan’s “Mississippi.” Gail O’Grady, Robbie Jones, Heather Hemmens and Matt Barr also star.