A mathematician who was trying to decipher a highly guarded equation is murdered; a former patient's son asks Watson for a loan.
Nic and Mina treat a patient with a failing heart VAD; Conrad gets a call from a previous patient; Devon’s VIP patient returns to the ER.
Van brings Earn to a Juneteenth party at the home of a wealthy acquaintance.
Laurel is scrutinized over her possible involvement with the bug infestation; Gustav and Rochelle find a way to communicate with those infected by the bugs.
Racial tension rises between the LAPD and the African American community, following the murder of a notable community activist.