Ek Hasina Thi S04 E22 Shaurya Hires a Contract Killer

Dev learns Shaurya is jealous of him and decides to discontinue the hospital project. Meanwhile, Shaurya hires a contract killer to murder Dev. Sakshi decides to host a party and invites Shekhar. Dr Dayal warns Durga to stay alert during the party. What is the intention behind hosting the party?