the long arm of the law; the meshes of the law; justice
Figurative expression referring to the reach and power of the law to catch wrongdoers. Often used in contexts of law enforcement or legal consequences.
The criminal could not escape the long arm of the law.
It is difficult to slip through the meshes of the law.
Compound of 法 (law) + の (possessive particle) + 網 (net). The metaphor of law as a net that ensnares wrongdoers is common across languages.