When Johnny's policeman friend is injured in a car crash, the paramedics can't reach the hospital because another squad is using the biophone. A child with a mysterious malady turns out to be drunk.

A crash victim needs major surgery to rebuild his leg. And a patient heads home at last.

In many ways, 9-1-1 has perfected the art of the season premiere. Each season, sans a few, they reintroduce viewers to the fray and set the stage for a multi-episode opening arc that delivers on the ...