do a disappearing act
US /duː ə dɪs.əˈpɪr.ɪŋ ækt/
UK /duː ə dɪs.əˈpɪr.ɪŋ ækt/

1.
玩失踪, 突然消失
to leave a place or disappear suddenly and without explanation
:
•
He did a disappearing act right before it was his turn to pay.
他玩起了失踪,就在轮到他付钱之前。
•
The cat did a disappearing act and we couldn't find her for hours.
那只猫玩起了失踪,我们找了几个小时都没找到。