Andrea Parker Will Return to 'Pretty Little Liars' in Season 7
#TwinOnPLL alert! Following her part in last night's shocking reveal on the Pretty Little Liars spring finale, Andrea Parker will be returning next season as a series regular.
— Andrea Parker (@TheAndreaParker) March 16, 2016
Freeform announced that Parker will reprise her role as Mary Drake, the identical twin of Jessica DiLaurentis and Charlotte's (Vanessa Ray) biological mom.
The spring finale also revealed that Mary has been in conniving with Alison's husband, Dr. Elliott Rollins (Huw Collins).
The network has not announced a premiere date for Season 7 of Pretty Little Liars.