When Timmy insists on going to a blasting site despite Lassie's protests, she is struck on the head by a dynamite-propelled rock and appears to not know who she is. Then she wanders away from the farm.
| Title | Concussion |
|---|---|
| Genres | Action & Adventure Drama Family Comedy |
| Release Date | 1958-03-09 |
| Episode Runtime | 00 Hours 24 Minutes |
| Season Number | 4 |
| Episode Number | 27 |
| Production Companies |
