Translation of "el ardid" into English

3 Abrán le pidió a su esposa que utilizaran el ardid que habían acordado y que consistía en decir que ella era su hermana.

3 Abram spoke to his wife about using a ploy they had earlier agreed upon, namely, to say that she was his sister.

Siento el ardid, pero supuse que era la única forma de entrar.

Oh, sorry about the ruse, but I figure it was the only way to get inside.