The super-powered members of the Justice League begin disappearing one by one. Only Batman and Green Arrow are left to investigate and discover that old enemies are involved.
| Title | Lost Heroes (1) |
|---|---|
| Genres | Animation Sci-Fi & Fantasy Action & Adventure Kids |
| Release Date | 2008-03-08 |
| Episode Runtime | 00 Hours 22 Minutes |
| Season Number | 5 |
| Episode Number | 12 |
| Production Companies | Warner Bros. Animation, DC |
