The Tears of the Golden Tiger. Fathom's Five, #6

There is a map at the bottom of the sea. There is a lost city in the heart of India-a fortress protected by the legendary Golden Tigers-that hides an elixir that could change the biological nature of millions of humans. And there is a secret cult that will stop at nothing to ensure homosexuality is wiped from the face of the Earth for all time. Join treasure-hunter Jake Stone, Texas cowboy Shane Houston, intrepid journalist Daniel West and Jake's street-smart nephew Sam on an adventure that will redefine Fathom's Five forever.
From the plains of South Africa to the Gulf of Thailand, from the bustling streets of New Delhi to the deepest jungles of Bengal, Professor Fathom's men must unravel the secret of the Tears of the Golden Tiger not only to save one of their own. but to save every gay person on the planet.