Suggestion: A woman is killed in her home with a homemade bomb, and her husband is suspected.

https://www.imdb.com/title/tt0629174/

https://www.imdb.com/title/tt0543927/

In Law & Order "Big Bang", the bomb is mailed to the woman, and it kills her by propelling a letter opener into her throat which she opened it with. The husband is suspected but cleared, as he was the target.

In Cold Case "Gleen", (spoiler) the bomb is left in the home for the wife to find...by the husband, who's found out and detained.

I can't find the true crime or other fiction work. Can you?