After briefly considering Sterling Hayden for Gashade, Hellman was shopping in a Los Angeles bookstore when he suddenly and simultaneously thought of Perkins, Warren Oates, and Will Hutchins for the main roles. Perkins was Hellman's next-door neighbor at the time, and she had known both Hellman and Nicholson for many years, having first met them while all of them were attending the same acting class. Hellman immediately telephoned Nicholson with his casting idea. Nicholson agreed that the three actors would be perfect.