An Alpine Miracle

Unspeakables Granger and Snape had legendary quarrels at work. In all of their years as co-workers, no one ever so much as dared to suggest they learn to work together. That is, until they are sent on assignment together and don't have much of a choice. [Additional tropes/tags: Enemies to Lovers, There Was Only One Bed, Travel, Research, Working Through Christmas] One shot.