Characters in Tripwire

Jack Reacher

A former military policeman drifting through Key West as a pool digger and bouncer, pulled back into the world he walked away from.

Also in Second Son, High Heat, Deep Down, Jack Reacher's Rules, Small Wars, Killing Floor, The Enemy, Die Trying, The Secret, Night school

Victor "Hook" Hobie

A ruthless, hook-handed loan shark in New York with a Vietnam War past, who seizes his clients' businesses by threats and torture.

Chester Stone

Co-owner of a struggling New York company that becomes a target of the villain's takeover.

Costello

A private investigator who comes looking for Reacher in Key West on behalf of a client.

Jodie Garber

The daughter of Reacher's old commanding officer, who is married and working in New York and wants Reacher to finish a task her father began.

Leon Garber

Reacher's former commanding officer and a father figure to him; the unfinished work he left behind drives the plot.

Also in The Enemy, Die Trying, Night school, The Affair

Marilyn Stone

Chester's wife and co-owner of the company, caught up in the villain's attempt to take it over.