<p>They had been coworkers. They had been friends. Mark Barton seemed personable, friendly and trustworthy when he began working at Brent Doonan's day trading company, All-Tech. When he began to lose money he vanished. When Barton reappeared it was to repay his debt in a way that no one could have expected. In a blase of bullets and blood, Baron killed four Momentum employees and wounded seven others. He then calmly crossed the street to All-Tech, paid his old friend Brent a visit and shot him five times. He went on to kill five more people and wound an additional six in the worst incident of workplace violence in history.</p>

Murder At the Office: A Surviv

Doonan, Brent C.

Literature & Fiction

New Horizons Press

<p>Recounts the attempted murder and recovery of a stock trader in Atlanta, Georgia, after a former co-worker entered his workplace and killed six colleagues in a murderous rampage. Reprint.</p>

Murder at the Office

Biographies & Memoirs

True Crime

New Horizon Pr

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Books by Doonan, Brent C.