Second Filter.
1. I mean, why start slow? You can sleep when you're dead again. (Can I make dead jokes? If it's inappropriate I'll clamp down on my usual sense of humor for the purpose of Our Shared Cause, but I'm getting the vibe that we're all dark and charmingly messed up here.) 2. There we go. Now that's no longer the least-credulous part of the story. 3. That answers my question of side effects.
But... how did you guys even ask people who killed them if raising them from the dead killed someone else? We're not uh. Those kind of detectives, are we? Because I like my jail-time in the misdemeanors.