Howard Rourke, eccentric student of necromancy and alchemy, has called Charlie Chan to his home to explain a strange procession of marching ants, which Rourke believes presages his own death - punishment by the spirit world for unearthing its secrets. Chan and his son follow the marching ants to a large, vine covered oak tree, behind a crypt where Rourke usually conducts his serious research. In the tree, Chan's son discovers a dead body!

**Please note that unfortunately we do not have part two of this 'Case'. If anyone knows of its existence, please email me, ned@rusc.com. Many thanks, Ned**