The series stars Kiefer Sutherland as Martin Bohm, a widower who discovers that his mute son Jake (David Mazouz) can predict future events.
Dent will play the recurring role of Martin's sister-in-law, according to TVLine.
She is best known for starring in FX cop drama The Shield from 2002 to 2008 and has since appeared in episodes of Criminal Minds, NCIS and The Mentalist.
The first episode of Touch aired on January 25 as a special preview, pulling in 11.9m for Fox.
Danny Glover, Gugu Mbatha-Raw and Roxana Brusso also star in the series, from Heroes creator Tim Kring.
Touch will return to Fox on March 19. The show will air on Sky1 in the UK.
> Touch: Is Kiefer Sutherland's new show a success?
> Kiefer Sutherland Touch interview: 'Following 24 was daunting'
Watch a behind-the-scenes feature on Touch below: