Complex sentence: It is hinted in episode 12 that Digger was the one who thwarted Mantid's plan in the past in the first episode hunter said his grandfather talked about the innerworld a lot when he was alive suggesting he is now dead.
Split into simpler sentences: It is hinted in episode 12 that Digger was the one who thwarted Mantid's plan in the past. In the first episode hunter said his grandfather talked about the innerworld a lot when he was alive suggesting he is now dead.