Shelley Murphy
Self. Reporter, Boston Globe (4 eps)
Anne Hawley
Self. Director Emerita, Isabella Stewart Gardner Museum (4 eps)
Dick Ellis
Self. Fmr. Head Art & Antique Squad, Scottland Yard (4 eps)
Martin Leppo
Self. Criminal Defense Attorney (4 eps)
Tron Brekke
Self. Fmr. Section Chief, FBI Boston Office (4 eps)
Myles Connor
Self. Art Thief (4 eps)
Stephen Kurkjian
Self. Author, Master Thieves (4 eps)
Justin Stratman
Self. Boston Latin School, Class of 1990 / Witness (4 eps)
Aaron Fannin
Self. Fmr. Guard, Isabella Stewart Gardner Museum (4 eps)
Nancy Clougherty
Self. Witness. Boston Latin School, Class of 1991 (4 eps)
Karen Sangregory
Self. Fmr. Guard, Isabella Stewart Gardner Museum (4 eps)
Ed Mahony
Self. Reporter, Hartford Courant (4 eps)
Patricia Vigderman
Self. Author, The Memory Palace of Isabella Stewart Gardner (4 eps)
Ed Whelan
Self. Fmr. Massachusetts State Police (4 episodes, 2021) (4 eps)
Robert Sikellis
Self. Fmr. Assistant Attorney General (4 eps)
Steven Xiarhos
Self. Deputy Chief, Yarmouth Police Dept. (4 eps)
Donna Reissfelder
Self. George Reissfelder's Sister-in-Law (4 eps)
Brian T. Kelly
Self - Fmr. Federal Prosecutor, Boston U.S. Attorney's Office (4 eps)
Pieter Roelofs
Self - Curator, Rijksmuseum (4 eps)
David Nadolski
Self - Fmr. Special Agent, FBI (4 eps)