“The Body Tree” (*1/2 out of four) was a boring horror thriller about a group of American kids (Erica Dasher, Emma Dumont, Kyle Jones, and others) who travel to Siberia for honoring the member of their murdered friend but then uncover a sinister plot that threatens them all. Promising beginning leads nowhere as film soon sputters and becomes predictable and dull. Filmed in Canyon Ranch, unsuccessfully passing itself off as Russia.