Crevice corrosion is an important degradation mode to be evaluated for corrosion performance of passive metals exposed to high temperature brines over long exposure periods. A large portion of the studies of crevice corrosion pertain to fully immersed conditions. This work addresses the crevice corrosion processes in thin films of electrolyte. A framework for analysis is presented considering the stages of damage evolution: initiation, propagation, stifling, and arrest. Controlling parameters for damage evolution are illustrated by experimental and computational results. The material/environment of interest is Ni-Cr-Mo alloys in high temperature, concentrated chloride brines.