Hint for Edgar Murders His Wife? (13-1)

[Hypersapien]

I can't figure out a motive to give him.

[Tellah]

I hope this might help without spoiling too much?
Nobody said that he had to murder his first wife

[LadyBoss85]

Tried a bunch of options, but i'm not getting this one..
Even with the hint

[cybersbe]

He needs to remarry... and then discover a secret. In that order.

[LadyBoss85]

Thanx, I think I got it, and going to try it right now !