*After about ten minutes (during which he seems unhappily lost in thought), L shifts position. He's on his knees, facing the headboard and grasping the bars at the top. He seems to be examining them carefully.*

*There is a brief jingling, followed by a soft scraping and clicking, then a hard metallic snap.*

[[Yes, that's right: L has released his own wrist, and locked Light to the headboard of the bed, after checking it out to make sure it would hold the handcuff securely.]]