Having found the corpse of the diablera, Mitla, among the ruins of an Aztec temple, the menace of the lycanthrope is definitely foiled. Some time later, having recruited their Irish friend, Pat Mac Ryan, in the Corpus Christi port, the pards head for Mexico. In fact, Montales is in trouble: he is trapped on his rancho by the desperados of El Gato, a bandit in the pay of the evil general Carranza, a traitor who intends to rip from Montales hands some burning evidence that could expose. Tex and his partners steal into the besieged ranch.
In this issue: the preceding adventure extends from page 5 to page 24 (artwork by Letteri); from page 25 to page 114, The Return of Montales (by Galleppini).