No memory and orders to kill. Who has his lover become?

Two years after their short, intense affair, Texas Ranger Jameson Beckett discovers Kelly Stockwell alive. Except she has amnesia... and a note demanding she kill Jameson. Where is the woman with whom he shared so much? Because Kelly remembers nothing, not even the toddler they learn is their daughter. With secrets unravelling and bullets flying, is Jameson's trust in Kelly's heart enough to save them all?