Matriarch Rebecca Pearson begins to experience noticeable memory lapses. She is eventually diagnosed with mild cognitive impairment, heavily implied to be the early onset of Alzheimer's disease.
Tensions between the brothers reach an absolute breaking point over the course of the season, largely due to a fierce disagreement regarding Rebecca's medical care and clinical trials. This Is Us Season 4
Joining the ensemble in Season 4 were Jennifer Morrison as Cassidy, Asante Blackk as Malik, Blake Stadnik as adult Jack Damon, and Tim Matheson as Rebecca's father, Dave Malone. Joining the ensemble in Season 4 were Jennifer
The couple must adjust to raising their baby, Jack, who was born blind. The emotional strain and Toby's coping mechanisms create deep friction in their marriage. 🎭 Cast & New Additions 🎭 Cast & New Additions Milo Ventimiglia (Jack),
Milo Ventimiglia (Jack), Mandy Moore (Rebecca), Sterling K. Brown (Randall), Chrissy Metz (Kate), and Justin Hartley (Kevin) all return as the core Pearson family.