Carefully I placed the leather within it and gently forced the jaws shut on it.

It was true.

Those marks were where Olaf Huldricksson's jaws had gripped.
"Wait!" Da Costa repeated, "I show you." He took other cords and rested his hands on the supports of a chair back.

Rapidly he twisted one of the thongs around his left hand, drew a loose knot, shifted the cord up toward his elbow.

This left wrist and hand still free and with them he twisted the other cord around the right wrist; drew a similar knot.