You can register in advance for the “100 Years of Unsolved Murder” panel by calling: 212-817-8215. The program number is 6048.

Or, you can go here: http://web.gc.cuny.edu/cepp/courses/history.html#11

Find the listing for “The Restless Sleep,” click on the name, and then chose one of several options offered there. The event is $15, $10 for students.