Synopsis by Hal Erickson
Chasing the Moon is a nonstop silent precursor to the classic talkie melodrama D.O.A. Tom Mix, in mufti rather than his traditional western garb, plays a young man who is convinced he has taken a slow-acting poison. Unlike the protagonist of D.O.A., who has only 24 hours to live, Mix is given a grace period of 30 days. He hopscotches from America to Russian to Spain and back again in search of the scientist who has the antidote. Tom Mix co-wrote the screenplay of Chasing the Moon with his director, Ed Sedgwick.
antidote [to poison], poison, scientist