Letitia, one of Screenterrier's Top British Teenage Actresses from last year, starred in Channel 4's Top Boy and award-winning feature My Brother The Devil. She was also named as a Screen International Star of Tomorrow in 2012.
She will star alongside Noel Clarke, Reece Sheersmith and Alex Kingston.
Chasing Shadows is created and written by Rob Williams (DCI Banks, Holby City)and is currently filming in the South East for eight weeks.