Kate and Toby's relationship evolves over a few years.
| Name | Type | Role | |
|---|---|---|---|
| Elizabeth Berger | Writer | ||
| Isaac Aptaker | Writer | ||
| Mel Mehrabian | Guest Star | Leslie | |
| Lisa Carswell | Guest Star | Dr. Diane Winslow | |
| Alexandra Breckenridge | Guest Star | Sophie Larson | |
| Auden Thornton | Guest Star | Lucy | |
| Adam Korson | Guest Star | Elijah | |
| Blake Stadnik | Guest Star | Jack Damon | |
| John Requa | Executive Producer | ||
| Elizabeth Berger | Executive Producer | ||
| Glenn Ficarra | Executive Producer | ||
| Dan Fogelman | Executive Producer | ||
| Kay Oyegun | Executive Producer | ||
| Jess Rosenthal | Executive Producer | ||
| Charlie Gogolak | Executive Producer | ||
| K.J. Steinberg | Executive Producer | ||
| Ken Olin | Executive Producer | ||
| Steve Beers | Executive Producer | ||
| Isaac Aptaker | Executive Producer | ||
| Ken Olin | Director |