Investigating a strange "stone," Henry and his friends discover that the object is actually the remains of the Soviet satellite Sputnik - that's wanted by Russian mobsters.
| Title | Sleeper in a Box |
|---|---|
| Genres | Action & Adventure Drama |
| Release Date | 2010-06-27 |
| Episode Runtime | 00 Hours 45 Minutes |
| Season Number | 1 |
| Episode Number | 3 |
| Production Companies | Warner Horizon Television, Cartoon Network Studios |
