Benedict Cumberbatch and Erica McDermott in BLACK MASS

Erica McDermott as SUE in MANCHESTER BY THE SEA

Jenna Lamia, Dendrie Taylor, Melissa McMeekin, Erica McDermott, and Kate B. O'Brien in The Fighter (2010)

Erica McDermott in Manchester by the Sea (2016)

The Home for Little Wanderers Big Wishes Gift Drive. December 2018 photo credit: Gillian Gordon Photographer Boston

Erica McDermott (photo by Russ Mezikofsky)

Actress Erica McDermott poses with Leo Cooney at The “Friends of Leo” ALS Benefit in Boston, MA

Erica McDermott, Boston International Film Festival April 15, 2011

From "The Fighter" 2010 official trailer.

Erica McDermott, Amy Adams, Mark Wahlberg, Bianca Hunter

OSCAR Night Gala 2011 Mandarin Oriental Hotel

The Fighter producer Dorothy Aufiero, center, with actresses Melissa McMeekin, left, and Erica McDermott, right, who play Micky Ward &  Dicky Ecklunds sisters in the Mark Wahlberg flick, party at the Liberty Hotel Boston.

Melissa McMeekin (left) and Erica McDermott, who worked together on The Fighter 2010 at the Ellie Fund Oscar Party at the Langham Boston. 