Detective Comics No. 426 (1972 - 20 cents cover price)

When Batman discovers a series of suicides, all with the same MO - its victims caught up in a game of Russian Roulette, his investigations lead him into the gambling casino's of the underworld. Taking his place at the table, it isn't long before high roller Bruce Wayne is shown to the man in charge, who suggests they engage in a game of Russian Roulette - one bullet in one gun. After the first round, Trench (the hood) turns his back to produce a "suicide" note for each of them to sign. When he turns back, it isn't Bruce he is facing, but Batman. Through several rounds, Batman tricks Trench and proves that due to a catch in the gun there was never any chance of the gambler losing his bet. The second story features the Elongated Man as he and his wife Sue try to solve the mystery of the "Trail of the fadeaway footprints!"