While Barty was in Azkaban Evan decided to fake his death to save himself and the others but the thing is Regulus Siruis Remus Pandora and Lily they all knew about it but Barty didn’t, But once Barty escaped Azkaban he went to a death eaters meeting once Voldemort claimed Evan dead it was like something flicked in Bartys brain making him more deranged then what he already was while in Azkaban.

After the meeting and Voldemort disappeared over the span of the next few days Barty was hunting down Voldemort single handily until he bumped into Siruis, Regulus, Remus Lily, James and Evan.

While the others were staring at Barty shocked he looked back at them without a hint of emotion which was expected from his loss of sanity.