When he came to, he was lying on the sofa in the Tofugu office.
The precious keepsake pendant from my mom that I thought I'd lost was returned to me before I knew it.
Thinking my money would be returned properly was a huge mistake.
You hopefully know the word 返す, which means "to return" (as in, you're doing the direct action of returning something). This word, on the other hand, is the version where something just returns (and you're not doing the action of returning). Use the る to help you to remember this. る the Kangaroo is returned to you. You don't do any of the returning, it just happens or someone else does it. That's why this word means to be returned.
The reading is the same as 返す, so as long as you know that you'll be able to apply it here to learn the reading of this word as well.