Pam (Jenna Fischer) accidentally brings lice into the office and lets Meredith (Kate Flannery) take the fall, while Dwight (Rainn Wilson) vows to destroy the parasites. Meanwhile, Jim (John Krasinski) has a fantastic day in Philly wooing a potential business associate (guest star Julius Erving). Meanwhile, Phyllis (Phyllis Smith), Nellie (Catherine Tate) and Kevin (Brian Baumgartner) meddle in Darryl's (Craig Robinson) love life. Leslie David Baker, Angela Kinsey, Oscar Nunez, Paul Lieberstein, Creed Bratton, Ellie Kemper and Jake Lacy also star.
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