Like in the last season

Are these sentences correct:

1) The producers of the show don't want to see violence in the new season, like in the last season.

2) The producers of the show don't want to see violence in the new season, like they did in the last season.

3) The producers of the show don't want to see violence in the new season, like what they saw in the last season.

Meaning: There was violence in the last season. The producers don't want violence in the new season.

Gratefully,

Navi.