Kate and Toby’s relationship evolves over a few years.

Air Date: Tuesday, April 12 (09:00PM – 10:01PM) on NBC.

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THIS IS US -- “Katoby” Episode 612 -- Pictured: (l-r) Chrissy Metz as Kate, Chris Sullivan as Toby, Jack Jr. -- (Photo by: Ron Batzdorff/NBC)