He left Kevin with a photo of Jack with a Vietnamese woman we saw from the previous episode.
In This Is Us season 3 episode 5, we caught glimpses of Toby’s past.
Previously on NBC’s This Is Us, Kevin decided he wanted to learn more about his father’s time in Vietnam, Toby stopped taking his antidepressants, and Randall decided to run against Councilman Brown.
But when Robinson left, Jack had not been as haunted as Kevin described.