One of the Detectives made a passing comment that they were like the Avengers. Clark Gregg, who plays the witness Arthur Highsmith, also portrayed Agent Phil Coulson in the The Avengers (2012) and Agents of S.H.I.E.L.D. (2013).
Iantha Richardson (Faith) played "Adult Tess" on "This Is Us" and Susan Kelechi Watson played her mother "Beth".