Here we are with the Episode 6 finale of Butterfly (“Annyeong”), and maybe it’s the best one? This series began with action that lacked urgency, and then ramped up to a place that still felt kinda ...

Piper Perabo can get used to playing villains. In the new Prime Video action-packed spy series “Butterfly,” Perabo is Juno, the evil head of a private intelligence corporation in South Korea. “Playing ...