Complete Mystery #1 (1948), was a crime comic of special note. Dr. Michael J. Vassallo,* who knows much more about Timely-Atlas than I do, says the story is penciled by Gene Colan and written by Stan Lee.
Colan used a semi-cartoon style, which was the house style at the time. It is always interesting to me to see an artist’s early work.
*Doc V has a fantastic blog, Timely-Atlas-Comics. It covers the history of Martin Goodman’s line of magazines, paperbacks and of course, comic books.