Jeff discovers that Samantha has been keeping a big secret from him when he comes face to face with her husband. Although the paramedic protests his innocence, the two men soon come to blows, with Samantha caught in the middle - but then someone grabs a kitchen knife. Meanwhile, Max helps a young couple stand up to their families, who don't want them to be together, and Charlie returns to work, although it's clear he's not firing on all cylinders