Glowing Treasure — Elsie W. Strother

Lexi Steele loved running her little art gallery in a small North Carolina town. At least, she loved it until the strange things started to happen. First her brother, who'd always had good taste in art, began to send her hideous paintings for the gallery from his travel abroad.

Then two magnetic young men appeared, demanding to buy artwork that was absolutely not for sale. The next day Lexi was visited by glamorous Rosalyn Gray, who delivered an odd, almost frightening letter. And soon the real nightmare began, with a secret enemy trying to hurt of kill Lexi. Could the culprit be someone she was just beginning to love?