Since bursting onto the scene more than two decades ago in Mean Girls, Seyfried has become one of Hollywood’s most reliable supporting actors. But with her Emmy- and Golden Globe-winning portrayal of disgraced Theranos founder Elizabeth Holmes in The Dropout and now an outstanding turn as a hardened cop in Long Bright River,

Mickey (Amanda Seyfried), a Philadelphia police officer, suspects a serial killer is targeting young women on “The Long Bright River.” PEACOCK Share When Amanda Seyfried was on “The Tonight Show Starring Jimmy Fallon” last week,