Also, Morena Baccarin, Chris Chalk, Drew Powell, and Nicholas D'Agosto were upped to series regulars after having recurred on the previous season.

In the second half, Professor Hugo Strange has begun experimenting with resurrecting the dead and giving them unnatural abilities.

[47] John Doman and Jada Pinkett Smith, who were regulars on season 1, returned to the show in guest star positions.

[7] The show also upgraded Morena Baccarin, Chris Chalk, Drew Powell and Nicholas D'Agosto from recurring or guest roles to series regulars.

The site's critical consensus reads, "While still tonally uneven in season two, Gotham is back with a renewed focus, moving away from disjointed case-of-the-week plots into a darker, more stable serialized story.