[2][3][4] After completing law school, Eisler joined the CIA, where he trained for three years afterward and held a covert position with the Directorate of Operations.

[2] Eisler made news in March 2011 when he walked away from a reported half million dollar advance from St. Martin's Press in order to go the self-publishing route pioneered by his colleague J.

In August 2014, Slingshot Global Media announced its intention to produce a miniseries, Rain, based on the book.

At that time, Keanu Reeves was attached to portray the character as well as serve as the executive producer alongside Eisler, Chad Stahelski, and David Leitch.

Eisler earned a black belt at the Kodokan International Judo Center and lives in the San Francisco Bay Area.