Vertaling van "terrible awful and horrible crime had then " (Engels → Frans) :

The person who committed this terrible, awful and horrible crime had then threatened the other family member that when he got out he was going to come after him and do the same thing to him.
L'individu qui avait commis ce crime terrible, affreux, horrible, avait ensuite menacé l'autre membre de la famille en lui disant que, quand il sortirait, il s'en prendrait à lui et lui ferait subir le même sort.

The night this horrible crime happened, my daughter was called to the hospital on behalf of Nathalie, who had been burned terribly.
Le soir où ce crime horrible est survenu, ma fille a été appelée par l'hôpital au sujet de Nathalie, qui avait été terriblement brûlée.