Gage Hartline Books in Order

A routine surveillance assignment draws former special operations soldier Gage Hartline into a pursuit involving diaries written by Hitler's unwilling lover. Criminals, intelligence agents, and the Army chase him across Europe as personal loss changes his mission.

Gage Hartline enters Spain's Berga Prison to protect a wealthy mobster's son. Rival gangs, corrupt officials, and repeated betrayals turn the paid assignment into a struggle for survival in which his training may be his only advantage.

Gage Hartline agrees to protect a wealthy Ukrainian woman facing repeated assassination attempts before a lucrative deadline. Her refusal to hide turns the job into a pursuit across Europe, with a professional killer following their every move.

At a personal low point, Gage Hartline accepts a contract to kill an American exploiting Peru's cocaine trade. Hoping to avenge murdered soldiers, he enters an organization whose concealed greed complicates his supposed mission of mercy.

Gage Hartline visits a private island off Honduras for a seemingly straightforward security-training job. After declining the offer, a disturbing discovery leaves him trapped and fighting the island's armed force with few allies and no easy escape.