Globe critic Sebastian Smee delves into the significance of each missing piece of art.
Two men posing as police officers gained entry to the museum, restrained two security guards, and left with more than a dozen stolen masterpieces.
A Globe reexamination of the case provided a new account of what happened on the night of the theft.
Federal investigators, in an unprecedented display of confidence, said Monday that they know who is behind the Gardner Museum heist 23 years ago.
In April 1994, the museum received an overture that Gardner officials regarded as a promising lead in the case.