Challenging Gabriel (Knight Security 2) is the 3rd story in USA Today Bestselling author, Carole Mortimer's, new contemporary series, Knight Security. This is a spin-off series to the #1 Bestselling Alpha Series.

When Angel's son is taken there is only one man she can turn to for help. Gabriel Knight, CEO of Knight Security. Unfortunately he's also the last man she should go anywhere near, ever again. He's hard and cynical, utterly ruthless, and the last time the two of them met did not end well.

When Angel Sinclair walks back into Gabriel's life, utterly beautiful, and just as much of a threat as ever to his ordered life, his first instinct is to tell her to leave and never come back.

But no matter what happened between the two of them in the past, or how badly it ended, Gabriel isn't cold enough to turn his back on Angel when she explains her son, Daniel, has been kidnapped. She has been warned not to go to the police, and given a limited time to come up with the ransom money. If she fails to follow either of those instructions she will never see Daniel again.

Can the two of them forget the hurts of the past, and work together to save the life of an innocent seven year old boy?

Carole Mortimer has written over 280 books, in contemporary and Regency romance, and is the Recipient of the prestigious 2015 Romance Writers of America's Lifetime Achievement Award. She is an Entertainment Weekly Top 10 Romance Author—ever. 2014 Romantic Times Pioneer of Romance. Was recognized by Queen Elizabeth II in 2012, for her "outstanding service to literature".