Needle in a bottle of hay.

Needle in a bottle of hay.

Through thick and thin.

Through thick and thin.

Put himself upon his good behavior.

Put himself upon his good behavior.

Leap out of the frying pan into the fire.

Leap out of the frying pan into the fire.

A nail in the wound.

A nail in the wound.

The asses' bridge.
[Lat., Pons Asinorum.]

The asses' bridge.
[Lat., Pons Asinorum.]

Within a stone's throw of it.

Within a stone's throw of it.

The fat's all in the fire.

The fat's all in the fire.

Turn over a new leaf.

Turn over a new leaf.