Tarzan Triumphant, the fifteenth installment in Edgar Rice Burroughs’ renowned Tarzan series, was published by Ballantine Books on October 12, 1979. This thrilling adventure features 192 pages of gripping narrative that unfolds against the backdrop of a land under threat from ruthless invaders. As evil men plunder and murder their way through the territory that belongs to Tarzan of the Apes, he patiently pursues them with unwavering resolve. However, there is an even more sinister force at play: in a remote valley within the Ghenzi Mountains, remnants of a twisted cult practice a perverted ancient belief brought from Rome nearly two millennia ago. The members of this cult are now depraved and many are driven to madness. They have kidnapped Lady Barbara Collis with the intention of using her as a human sacrifice—unless Tarzan can arrive in time to thwart their malevolent plans.