thick as thieves

The two used to be “thick as thieves,” he said.

"They were thick as thieves," explains Harsha Evangeli, who taught the teenager art.

“She’s scared you’ll be like Charlotte. It’s difficult for Kat to make friends, but the two of them were thick as thieves. It really helped her come out of her shell. Then one day…Char was gone.”

Joey King, who plays youngest daughter Halina, values having a close relationship with her grandmother and says they are “thick as thieves.”

Mr. Luttrell recalled that he and his peers were “thick as thieves” on the campaign trail.