Freedman wrote the book and lyrics to a musical version of "Kind Hearts and Coronets", with music and lyrics by Steven Lutvak, directed by Ron Lagomarsino, which was presented at the Sundance Institute Theatre Laboratory, Utah, in July 2006. The musical had a staged reading in the Breaking Ground Series at the Huntington Theatre in Boston in April 2006. "A Gentleman's Guide to Love and Murder", co-written with Lutvak and based on the 1907 novel "Israel Rank" by Roy Horniman (the source for "Kind Hearts and Coronets"), ultimately premiered in October 2012 at Hartford Stage in Hartford, Connecticut. The production, directed by Darko Tresnjak, transferred to the Old Globe Theatre in San Diego, California, in March 2013, and then opened on Broadway in 2014. Freedman won the Tony Award for Best Book of a Musical for this musical.