Prem Mandal first appeared upon meeting Dev Alahan and Vernon Tomlin at Greenside Golf Club. Prem, who ran a successful floor-cleaning business, remembered Dev from Weatherfield Traders' Association. Prem took Dev under his wing, as he said Dev reminded him of a younger version of himself. Dev was invited to dinner with Prem and his wife Nina. Immediately afterwards, Nina started an affair with Dev behind Prem's back.