Freckles thinks out of the box

Yesterday I came home and Freckles greeted me at the door. Which would've been cute had I not left him in his crate. His locked crate.

I inspected the house. No accidents, no tchotchkes destroyed. There was but one telltale sign: Wrinkles on my bedspread.

He's not allowed on my bed.

How did he get out? Will this happen again? Is it a sign of separation anxiety? So many questions. The sleuthing begins.