Translation of "L'intrus" in English

Mais l'intrus était un détective.

But the intruder was a detective.

Il est l'intrus de la famille.

He is the odd one of the family.

Et je me suis soudain senti comme l'intrus

and I suddenly found myself as the odd one out

L'intrus sauvage est enfin mis sous sédatif par le personnel vétérinaire

The wild intruder finally sedated by veterinary staff