Donald E. Keyhoe
Published in Flying Aces, February 1941. Reprinted in the collection .
"Captain Brennard became - a grinning green skull!"
"One moment, Eric Trent and Mortimer Crabb, his sad-faced companion, were talking with Captain Brennard - and the next moment the the Captain was a horrible, grinning green skeleton! That happened in Seattle - but they flew North in quest of the grim answer!"