What is the future perfect tense for "catch"?

I was speaking with a Japanese student and got stuck on the future perfect tense for catch. We were discussing New Girl, and I said, "Soon, Schmidt will be caught in a lie." (regarding his dating two girls at the same time) She was confused with "will be" being future tense and "caught" being past tense together and I was blank on how to explain it to her! Please help clarify the correct structure of this statement for me.