Lionel is taken hostage by a masked man who forces him to play elaborate games for the prize of staying alive. Martha goes to confront Lionel after Clark tells her Lionel knows his secret and becomes a part of the game herself, fighting for her life.
| Title | Mercy |
|---|---|
| Genres | Sci-Fi & Fantasy Action & Adventure Drama |
| Release Date | 2006-04-20 |
| Episode Runtime | 00 Hours 43 Minutes |
| Season Number | 5 |
| Episode Number | 19 |
| Production Companies | DC, Warner Bros. Television, Tollin/Robbins Productions, Millar Gough Ink |
