In a matter of hours, “20/20” will air its feature episode, “I Have Killed For You,” about the Alton, Illinois, murder of Bonnie Woodward. As the 8 p.m. airtime inches closer, ABC added ...

In a matter of hours, ABC's "20/20" will air its feature on the Bonnie Woodward murder case in Alton, Illinois. Here are a few insights the network has provided.