Dr. Phil speaks with exes, Libby and Brian, who say they've been at war over the custody of their two youngest children. Brian claims Libby has poisoned their children against him and is trying to erase him from their lives. Libby insists she has done nothing wrong, and claims it's Brian's abusive and demeaning behavior to her and their children that has them turning their backs on their father. Get an inside look at what went on before the taping began that left Dr. Phil almost canceling the taping altogether. Find out why Dr. Phil refused to allow Libby and Brian on his stage. You don't want to miss the drama that occurs backstage. It's a Dr. Phil like you have never seen before.

A team of retired investigators, Kevin Gannon, Anthony Duarte, Mike Donovan and Dr. Lee Gilbertson, say a spray-painted smiley face with a taunting grin could be the disturbing signature of a nationwide network of serial killers who target college-aged men. The chilling symbol has been seen near many of the sites where these young men have been found in incidents that police ruled accidental drownings. But Oxygen's new six-part true crime docuseries, Smiley Face Killers: The Hunt for Justice, follows six mothers who are in disbelief that this tragedy has happened to their family. Could the drowning deaths of these young men be the work of a group of serial killers who are still on the loose?