Shelley Murphy

Self. Reporter, Boston Globe

Anne Hawley

Self. Director Emerita, Isabella Stewart Gardner Museum

Dick Ellis

Self. Fmr. Head Art & Antique Squad, Scottland Yard

Martin Leppo

Self. Criminal Defense Attorney

Tron Brekke

Self. Fmr. Section Chief, FBI Boston Office

Myles Connor

Self. Art Thief

Stephen Kurkjian

Self. Author, Master Thieves

Justin Stratman

Self. Boston Latin School, Class of 1990 / Witness

Aaron Fannin

Self. Fmr. Guard, Isabella Stewart Gardner Museum

Nancy Clougherty

Self. Witness. Boston Latin School, Class of 1991

Karen Sangregory

Self. Fmr. Guard, Isabella Stewart Gardner Museum

Ed Mahony

Self. Reporter, Hartford Courant

Patricia Vigderman

Self. Author, The Memory Palace of Isabella Stewart Gardner

Ed Whelan

Self. Fmr. Massachusetts State Police (4 episodes, 2021)

Robert Sikellis

Self. Fmr. Assistant Attorney General

Steven Xiarhos

Self. Deputy Chief, Yarmouth Police Dept.

Donna Reissfelder

Self. George Reissfelder's Sister-in-Law

Brian T. Kelly

Self - Fmr. Federal Prosecutor, Boston U.S. Attorney's Office

Pieter Roelofs

Self - Curator, Rijksmuseum

David Nadolski

Self - Fmr. Special Agent, FBI