Kelsi was last seen in her residence on Second Avenue in Arcadia, Florida with her mother, Kelli Krum, just prior to 12:00 a.m. on August 11, 1994. Kelli was in the process of moving to her parents' home in Sebring, Florida at the time. She and Kelsi were reportedly last seen by their cousin, James Dennis "Jimbo" Ford, just before he left their home. Kelli was apparently speaking on the phone and packing boxes at the time Ford saw her. Neither she nor Kelsi have been heard from again.

Kelli and Kelsi's residence did not show any signs of a struggle when investigators searched the house shortly after their disappearances. Their belongings had been partially packed in preparation for the pending move. Kelli didn't take her purse, vehicle or any clothing for herself or her daughter. Ford was given a polygraph test in 1997 regarding the Krums' cases and failed. He refused to take another lie detector test and has never been charged in connection with the disappearances.

Ford was convicted in 1999 for the 1997 murders of a Punta Gorda, Florida couple. He is currently on death row awaiting execution. The investigation into the homicides led authorities to investigate the renewed possibility Ford was involved in the Krums' cases, as well as an unsolved Florida homicide from 1984. Investigators searched an orange grove near Arcadia in 1997 after Ford's arrest when they received a tip that the Krums' bodies were buried in the area. No evidence was located at the site. Ford maintains that he knows nothing about the disappeararances of Kelli and Kelsi.

There have been no arrests in the Krums' disappearances and the cases remain unsolved, but foul play is suspected.