Martin Rooney is no stranger to the fight. An internationally renowned fitness expert and combat sports specialist, Rooney has spent over three decades in the trenches of physical and mental warfare. He is a Kodokan judo black belt and a Brazilian Jiu Jitsu brown belt who has trained UFC champions, Olympic medalists, and world champions in several different disciplines. A former U.S. Olympic bobsledder and two-time Guinness World Record holder, Rooney is also the creator of the Training for Warriors system, which has transformed over a million lives across the globe. From consulting for Fortune 500 giants like Nike and Prudential to working with elite military organizations like the Navy SEALs and Army Rangers, Rooney’s knowledge runs deep. He holds a Master of Health Science and a Bachelor of Physical Therapy degree from the Medical University of South Carolina, alongside a BA in Exercise Science from Furman University. He now serves as Chancellor of Lionel University. Rooney has penned 12 previous books, but BloodFeud: Raising Cain is his first foray into thriller fiction.