One of the world's leading experts on infidelity provides a step-by-step guide through the process of marital infidelity--from suspicion and revelation to healing, and provides profound, practical guidance to prevent cheating and, if it happens, recover and heal from it.

You're right to be cautious when you hear these words: "I'm telling you, we're just friends."

Good people in good marriages are having affairs. The workplace and the Internet have become fertile breeding grounds for "friendships" that can slowly and insidiously turn into love affairs. Yet you can protect your...