Mark Olshaker is the author of eight nonfiction books, mainly on criminal justice and behavioral profiling, and five novels, including Einstein’s Brain and The Edge. He is also an Emmy Award-winning documentary filmmaker whose subject matter has ranged from architecture to history, science to terrorism, current events to classical theater. He has written commissioned screenplays for several of his novels, as well as the IMAX film Stormchasers. He is executive director of the English-Speaking Union of the Nation’s Capital, consultant to the Justice Department’s Office for Victims of Crime, chairman of the Cosmos Club Foundation, a member of the Rod Serling Memorial Foundation and on the board of the Norman Mailer Society. He and his wife Carolyn, an attorney, live in Washington, D.C.