[cheering and applause] >> welco. thank you very much. my guest tonight recovers stolen paintings and found the f.b.i.'s national art crime scene. i hear a lot of the suspects have been framed. please welcome robert k. wittman. [cheering and applause] hey mr. wittman, thank you so much for coming on. >> thank you. >> stephen: okay. you've got a fascinating job. you are a former senior investigator and founder of the f.b.i.'s arts crime team. during 20 years of your career there, you recovered more than 225 million dollars worth of stolen art and cultural property. now you've got your own firm, robert whitman incorporated, and your memoir is called "priceless." okay. how does one become an investigator in art crime? they say it takes a thief. are you a cat burglar turned good? >> new york i think what you have to do is you have to have a real deep understanding and love of art. i think that that helps. and then also you have to have an understanding of the art business. because, you know, when we talk about art and art history, you know, p