. >> actually, becky's prodigy was a man named mark holbrooke.d of keith's murder he called up investigators, he wanted them to know he and becky had had an affair. when it ended, 19 months before the shooting, he apologized to kyiv and promised never to see becky again. but he wanted cops to know she had been in touch with him recently and a lot. >> she still loved him and that she would be moving so she could be near him, whether he wanted to be with her or not. >> the affair had been a reason behind beckoned keeps breathe split. now investigators and the ex lover hatched a plan, recorded conversation between becky and her so-called prodigy, maybe becky would give something up to him. three days after keith was shot, becky's ex dialed her up. >> becky, how are you doing? >> thank you for calling me. >> becky seem concerned about covering up the affair. >> if you could say that you knew -- that you knew a realtor by that name that you want to broker school with it. >> while she stuck to her story about the introduction of keith she said she had