I picked this up at the library book sale. From the publisher:
When their mother suffers a heart attack, two sisters are forced to stop the squabbling that has defined their relationship since they were kids, and kiss and make up. Deborah Peltz, a soap opea writer in New York, and Sharon Peltz, a wedding planner in Florida, grudgingly agree to a truce for the sake of their mothers health. and their fragile peace holds - until a man comes into their lives...a man to whom they're both attracted...a man who happens to be their mother's cardiologist.
It doesn't take long before insults are hurled and verbal fists fly. But Deborah and Sharon's bickering takes an entirely new turn when they discover the object of their mutual affection stretched out on the floor of his den - dead. Suddenly the sisters go from being enemies to alibis. The are on the police's list of suspects for the doctor's murder, and sibling rivalry or no sibling rivalry they have to to bury the hatchet and get themselves out of trouble. In the process, they not only find men of their own to love...they find a way to love and accept each other.

Donated to the fundraiser.