Werewolf of London

Renowned British botanist Dr. Wilfred Glendon has traveled to Tibet to obtain a specimen of a plant purported to exist, Mariphasa lumina lupina, and exist only in one valley in the Himalayas. It's name is partly because its survival is dependent upon the moon, it only blooming in moonlight. Despite locals warning him of dangers in the valley, he is able to obtain a specimen to bring back to London for research. He finds that a fellow botanist, Dr. Yogami, is also interested in obtaining a plant, specifically the bloom, for its purported medicinal properties in dealing with lycanthropy, he, to Glendon's disbelief, stating knowing two people afflicted in London. What happens and happened between the two botanists will affect Glendon's future, including with his wife, Lisa Glendon, who loves her husband but feels neglected, especially with the return into her life of childhood friend Paul Ames, who has his own romantic feelings for her.