Multiple Motives, A Kate Huntington Mystery (#1) by KASSANDRA LAMB

Multiple Motives, A Kate Huntington Mystery (#1)
(NOTE: This e-book is FREE through most online book retailers.) Psychotherapist Kate Huntington helps other people cope with the horrible things that have happened to them, but she herself has led a charmed life... so far. Now a killer with a mysterious grudge against her and her closest friend, lawyer Rob Franklin, is threatening everyone and everything that she holds dear.
When the detective assigned to their case decides they are lovers and the attacks against them and their families are veiled attempts to rid themselves of their spouses, Kate and Rob are forced to investigate on their own. Can they identify their mutual enemy, before he or she kills again?