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