Preheat oven to 425°F (220°C).
In a saucepan, combine raisins and water. Cook over medium heat until raisins are plump, about 5 minutes.
In a small bowl, mix sugar and cornstarch. Stir into raisin mixture. Cook and stir until thickened, about 2 minutes. Remove from heat and stir in lemon juice, cinnamon, and butter. Let cool.
For the crust, mix flour and salt in a large bowl. Cut in shortening until mixture resembles coarse crumbs. Gradually add water, tossing with a fork until dough forms a ball. Divide dough in half.
On a floured surface, roll out one half of the dough to fit a 9-inch pie dish. Transfer to pie dish. Add cooled raisin filling.
Roll out remaining dough to fit top of pie. Place over filling. Trim, seal, and flute edges. Cut slits in top.
Bake for 30-35 minutes or until crust is golden brown. Cool on a wire rack.