Janet Ruth Montgomery (born October 29, 1985) is an English film and TV actress. She first gained attention for her role as Ames in the second season of the television series Human Target (2010–11), and also for her appearance in the 2009 straight-to-DVD film The Hills Run Red. She played the lead in the television drama Made in Jersey (2012), which was cancelled after two episodes aired. From 2014 to 2017, she starred as the lead character, Mary Sibley, in the series Salem. From 2018 to 2023, Montgomery played Lauren Bloom on the medical drama television series New Amsterdam.