Dana Girls Mystery Series by Carolyn Keene, Mildred Benson

Jean and Louise Dana are given a valuable study lamp by their Uncle Ned. The girls plan to place it in their study room at Starhurst when they return for their sophomore year. But before the girls leave, the lamp is stolen! After the sisters return to Starhurst, they discover the lamp in a secondhand shop and buy it back... moreJean and Louise Dana are given a valuable study lamp by their Uncle Ned. The girls plan to place it in their study room at Starhurst when they return for their sophomore year. But before the girls leave, the lamp is stolen! After the sisters return to Starhurst, they discover the lamp in a secondhand shop and buy it back. Unwittingly, the girls make an enemy of their classmate, Lettie Briggs, not only because the girl had planned to buy the lamp but because the Danas' room is the one Lettie wanted to have at Starhurst.The Danas are overjoyed when they discover that their friend Evelyn Starr has returned to Starhurst. Evelyn's family once owned Starhurst, but Evelyn and her brother now have very little money, and Evelyn is unsure that she can pay for the tuition. The Danas hope that they can find a way to help Evelyn stay at Starhurst, little realizing that the solution to Evelyn's problem is held within the antique study lamp. less

When Arlene Sherwood disappears, the Danas' only clue is that Arlene received a dire prediction from a psychic reader. Did Arlene run away out of fear caused by the prediction, or is something far more sinister at play? Jean and Louise believe that Arlene has been abducted, especially after they learn that Arlene's father has also disappeared.Mrs. Sherwood soon receives a message from her husband, requesting that she place certain important drawings in an old well... moreWhen Arlene Sherwood disappears, the Danas' only clue is that Arlene received a dire prediction from a psychic reader. Did Arlene run away out of fear caused by the prediction, or is something far more sinister at play? Jean and Louise believe that Arlene has been abducted, especially after they learn that Arlene's father has also disappeared.Mrs. Sherwood soon receives a message from her husband, requesting that she place certain important drawings in an old well. The drawings are very valuable to Mr. Sherwood's work, and the loss of the drawings will be a great blow. The girls deduce the location of the well and plan to substitute fake papers. Their plans fail, leaving the girls in a dangerous position as they continue their search for their missing friend and her father. less