to see through (a lie, scheme, etc.); to see into (someone's mind); to read (someone's true feelings); to penetrate
刑事はアリバイをすぐ見透かした。
The detective immediately saw through the alibi.
子供は父の作り笑顔を見透かして、心配顔になった。
The child saw through her father's forced smile and looked worried.
彼は相手の嘘を見透かす術を知る。
He knows the art of seeing through others' lies.