Truly, Madly, Deadly - Valentine Mysteries

Tess Valentine's only goals for her trip to her home city of San Francisco are to legally take over her trust and to show her sexy husband, Jack Valentine, the sights of the city. She certainly has no plans of visiting her parents, who have resented her since her grandfather gave her the trust money her parents thought should go to them. When her parents invite her to dinner, Tess reluctantly agrees, despite her concerns that her parents may once again resort to unscrupulous tactics to try and take her trust.
The last thing she expects on her visit is for her father to be arrested for the murder of his mistress. Tess has no intention of helping her father despite her mother's pleas. But when her cousin, the lawyer Tess' father hires to represent him and the one family member who'd ever been nice to Tess, asks for Tess' help in the case, she agrees to investigate. Turns out several people could have wanted her father's mistress dead, including the victim's sister, a disgruntled employee, and even Tess' mother, who is all of a sudden very cozy with Tess' trust lawyer.
But as Tess and Jack get closer to the truth, a murderer's obsession is prepared to stop them.