The best of TV and streaming this week

Sam Mendes’s ‘What They Found’ is a harrowing Holocaust documentary; BBC drama ‘Reunion’ centres on a deaf ex-convict; Jon Hamm stars in wealth-meets-crime satire ‘Your Friends & Neighbors’; Michelle Williams is uninhibited in ‘Dying for Sex’; gentle parenting comedy takes on autism stereotypes in ‘Austin’; Seth Rogen spirals in stupendously funny Hollywood satire ‘The Studio — reviews by Dan Einav