Paul C. Brunson: Red Flag

Charlotte was left terrified when her partner's early devotion turned to control and violence, culminating in a devastating graveside attack.

Jak endured 6 months of manipulation by serial fraudster Christopher Harkins, the Tinder Predator, who was later convicted of assault, fraud and rape.

Megan's escape from an abusive and violent partner was followed by something worse: both she and her ex were attacked by a stalker.

Kathryn was driven to choose her abusive partner over her children - but then his violence escalated, leaving her with a broken back and ribs.

The relationship expert speaks to Ellie, who was told she was a worthless sex object by her misogynist boyfriend who bragged online about abusing her - until she fought back.

The relationship expert speaks to Gareth, who was left controlled, isolated and starved by an abusive girlfriend who threatened to accuse him of rape if he tried to leave.