Panic / Jeff Abbott.

Enhanced descriptions from Syndetics:

What if everything in your life was a lie?
Things are going well for 24 year-old Evan Casher: his career as a documentary filmmaker is booming and his relationship with his new girlfriend, Carrie, couldnat be better. After an urgent phone call from his mother, he makes an unexpected trip home to Austin. Then the unthinkable happens. He arrives to find his mother brutally murdered, and narrowly escapes an attempt on his own life. Spirited away from the scene by an enigmatic mercenary with an agenda of his own, Evan is confronted with a shocking fact: his entire life has been little more than a carefully constructed lie. Pursued by a powerful, ruthless organization of killers who will stop at nothing to keep old secrets buried, Evanas only hope for survival is to uncover the truth about his familya]and his own past. With his motheras attackers fast on his heels and with no one to trust--not the authorities, his father, nor the woman he loves--his perilous search takes him from the Texas Hill Country to New Orleans, to London, and to Miami. Full of unforgettable characters and jolting plot twists, Panic is an emotionally charged, heart-stopping thriller about one manas determination to take back his stolen life.
Praise for PANIC:
PANIC is a ride down the roaring rapids. Jeff Abbott has put together a hell of a page turner.
aMichael Connelly
PANIC is Jeff Abbott's best novel yet... an instant classic immediately full of questions--who, what, why, how--that have answers you won't see coming.
aLee Child
Jeff Abbott's PANIC is a superb story, a sterling example of why we love stories about ordinary men thrust into extraordinary circumstances.Don't even try to anticipate the twists and turns in this intelligent thriller -- just hold on tight and remember to breathe.
aLaura Lippman
PANIC is a sleek, smart thriller that combines a family tragedy, international intrigue, and the redemptive power of love into one of this year's best books. There is no question: Jeff Abbott is the new name in suspense.
--Harlan Coben
aPANIC is what a reader enjoys when a really talented writer like Jeff Abbott comes up with a fresh and gripping plot. It's even better than his CUT AND RUN.
--Tony Hillerman
Jeff Abbott has all the ingredients of high suspense in PANIC: an ordinary man whose everyday life changes within minutes into an unrecognizable landscape, a place where he is in constant danger and can find no easy way out. Be prepared to stay up all night.
--Jan Burke