It had been several weeks since I'd last heard from my ex-wife, Sue, but I was sure she had not given up her life of prostitution. Consequently, I thought it likely she would again contact me at some point to inveigle me into allowing her to use my house to entertain a client. The call came on a Friday evening. “Hello, knobhead!” she quipped. It might not be a term of affection, but I knew she meant nothing by that insult...