The Globe runs what it says is Martin's open letter to Shepherd, in which he pleads with her to open [her] heart and do what's right by repaying him the $4,000 she reportedly owes him.
Martin doesn't plead at all, instead he's trying to blackmail her.
mnli hypothesis: Martin doesn't plead at all, instead he's trying to blackmail her. premise: The Globe runs what it says is Martin's open letter to Shepherd, in which he pleads with her to open [her] heart and do what's right by repaying him the $4,000 she reportedly owes him.