Walk the Line directir James Mangold has signed on to direct an untitled legal thriller for L.A.-based Bold Films.

According to Variety, Mangold's wife, Cathy Konrad, is producing through their Treeline Films banner.

The script is based on the true story of a pair of New Orleans lawyer brothers who took on a multinational oil company and its heavyweight legal teams to rep the rights of the families of an oil rig that sank in a typhoon.

Sasha Jenson and Casey La Scala penned the screenplay.

No production date has been set.