A city-wide blackout in the middle of a record-breaking heatwave prompts the 118 to spring into action as mayhem erupts in Los Angeles in the new episode "Desperate Times." Meanwhile, Chimney (Kenneth Choi) confides in Hen (Aisha Hinds) about Maddie's (Jennifer Love Hewitt) condition, while Athena (Angela Bassett) sees her worst nightmare coming true. Peter Krause also stars.