cover your tracks
US /ˈkʌvər jʊər træks/
UK /ˈkʌvər jʊər træks/

1.
apagar os rastros, esconder as provas
to hide or conceal evidence of one's actions, especially wrongdoing
:
•
After stealing the documents, he tried to cover his tracks by deleting all emails.
Depois de roubar os documentos, ele tentou apagar seus rastros excluindo todos os e-mails.
•
The politician was careful to cover his tracks regarding the scandal.
O político teve o cuidado de apagar seus rastros em relação ao escândalo.