Ulrich Boser is the author of The Gardner Heist: The True Story of the World’s Largest Unsolved Art Theft, a book that examines the ongoing investigation into the 1990 burglary of the Isabella Stewart Gardner Museum. Tonight at the Corcoran Gallery of Art, Boser will give a talk about his own contributions to the investigation, including the revelation of the likely identity of at least one and possibly both of the burglars. A book signing follows. 7 p.m. $15 for members, $20 for the public.

It seems that every time there’s new news about the Gardner Heist it shakes out even more news and tips about this. What is the weirdest tip you’ve received since you published the book?

When you called, I was switching over from my voicemail in which a woman had left a message about how she had seen someone once on America’s Most Wanted. She was trusting her woman’s intuition, and she wasn’t sure, but maybe that was Mr. G, who I mention in the book.

She felt like this was Mr. G.

She felt like this was Mr. G. I think what’s really important to keep in mind here is that it has been nearly 20 years. We don’t know where these paintings are, and it’s an unsolved case. You do really need these tips from the public and that is what’s going to solve this case. I think investigators have pushed as hard as they can on most of the viable angles, and so you’re gonna need someone from the public to step forward and offer a piece of information that will complete the puzzle.

While a lot of curious tips come forward, I think it is very important to encourage people to–if they have any information, if they’ve heard anything, if they recognize one of these paitnings–to come forward. Either to visit our web site, opencase.com, or to visit the museum itself and contact Anthony Morey, who is an excellent investigator. He can accept that information as well, and he of course sits on top of the $5 million reward, which of course is for many people one of the most attractive things about giving a tip.

Has anything surfaced since you’ve written the book that’s pushed the investigation forward?

People have contacted me about specific things I’ve written in the book about David Turner that I think are quite interesting. I have not solved this case, and I don’t mean to imply that I have solved this case. But I do think that there is a great deal of evidence that David Turner is one of the men who robbed the museum that night. Other investigators have pointed to this as well, so I write about that at great length in the book. Because of that, some people who have known him or have heard of him have said some things that are quite interesting. Certainly this has, as you said, shaken up and created some more leads, but I certainly wouldn’t want to say we’re any closer to finding these paintings.