Double Harebrained News Today

Whats yours? >> yeah. double harebrained. >> reporter: alexander bennett was sent to prison and required to give dna. now, years later, that dna was tying him to heidis murder back east in maryland. for baltimore prosecutors garrett glennon and matt breault, the dna was an enticing lead but far from definitive proof. >> it was enough to say it looks like it came from him, you know? but we cant say its definitively his. so there was more investigation to do. >> reporter: so, the detectives went t...

A friend of bennetts wanted to bomb the courthouse. but they went further, building a real bomb and planting it in his house. the bomb squad was dispatched and that friend, hauled down to the station for an interview. >> theyre grillin him pretty hard cause thats a kinda serious crime. one of the detectives ultimately lets him listen to the 911 call and he recognizes grant lewis voice. >> so its not all muffled or disguised or -- >> no. no, its just -- >> he said, "thats --" >> "--thats grant le...