Return of the Copperhead: Doctor Satan's henchman remotely blows up the experimental ship, with Lois and crew aboard, as ordered.
| Release Date | December 1, 1940 | |
|---|---|---|
| Status | Released | |
| Original Title | Mysterious Doctor Satan: Return of the Copperhead | |
| Runtime | 30min | |
| Budget | — | |
| Revenue | — | |
| Language | — | |
| Original Language | English | |
| Production Countries | — | |
| Production Companies | ||
