"Can't you do that later?" Jon asked. "This is really important."
"No, I will not do it later," his mom said, sternly.
"Mom," Jon said, moving down the stairs towards her. "I ..." He never got to finish his sentence, because he accidentally bumped into Zoe and set off the device. (That gun was really sensitive.)
After Jon disappeared, the device dropped the floor with a thunk.
But who or what did he now possess?