Death By Drowning #221
| Series | Uncanny X-Men |
| Number | Vol. 1 #221 |
| Publisher | Marvel Comics |
| Date | 1987-09 |
| Type | Comic Book, Softcover |
| Language | English |
| Colorist | Glynis Oliver Wein |
| Editor | Ann Nocenti |
| Editor In Chief | Jim Shooter |
| Inker | Dan Green |
| Letterer | Tom Orzechowski |
| Penciler | Marc Silvestri |
| Writer | Chris Claremont |
| Genre | Superhero |
| Published in | New York, NY |
| Pages | 32 |
| Characters | Mr. Sinister |