Selig was co-executive producer of several films , including A Walk Among the Tombstones , based on a novel by Lawrence Block .
I Am Michael , which screened at the Sundance Film Festival in 2015 .
Selig was co-executive producer of several films , including A Walk Among the Tombstones , based on a novel by Lawrence Block , and I Am Michael , which screened at the Sundance Film Festival in 2015 .