Marcy Heimark is the CEO of Whole Clean Detergent. She was visited by Matthew Casey and Kelly Severide after it was discovered that her laundry detergent was causing fires at laundromats. When they lit some detergent on fire in front of her and it combusted into flames, she immediately halted all production until she resolved the situation. She soon realized their new suppliers were giving them methadone for their batches and she, alongside Severide, were able to make contact with every driver, except for one of them, who had mechanical issues.