Disclosed herein is a recombinant oncolytic virus comprising a nucleic acid sequence encoding tumor necrosis factor-related apoptosis-inducing ligand (TRAIL). One such oncolytic virus is oHSV. One form of TRAIL contained within the oncolytic virus is a secreted form of TRAIL. Examples of various forms of oHSV and secreted TRAIL are disclosed therein. Also disclosed are host cells and therapeutic formulations comprising the recombinant oncolytic virus. Also disclosed are methods of treating cancer in a subject by administering a therapeutic formulation comprising the recombinant oncolytic virus to the subject.