. >> reporter: mike digiuro is trent's dad. >> so he walked onto university of kentucky, which is inoutheast conference, which is about as big as they come. >> reporter: sure. >> and he worked real hard to get to where he was. >> reporter: and trent's teammates saw that hard work. >> trent had the ability to perform. so while he might have been a walk-on, his performance allowed him to endear himself to others very quickly. >> reporter: that july, as trent practiced football and prepared for his senior year, his parents went to lexington to see him. and to talk about his future. >> he was trying to decide what he wanted to do with his life. he was talking about maybe going to law school or business school. >> reporter: did he talk about his birthday celebration? >> we knew he was gonna have some kind of a thing, and then he was supposed to come home that next day to celebrate his birthday with us, and he never made it. >> reporter: no. and a creeping fear washed over the university of kentucky football team. was a killer targeting them? and if so, who would be next? >> coming up -- >