Under the covers phrase
In the bed or under a blanket
After a hectic day, I just want to get under the covers.
She crawls under the covers and cries as if she were a kid.
In a private way
He has been working under the covers tracking the drug smugglers.
John and Anne look so strange. I guess they have been under the covers together.
Used to tell someone to keep secret what you're about to say
To be secretly working together
Kept in secret