SULLIVAN DETECTIVE AGENCY DOUBLE TROUBLE THE FINAL CLUE, THE (PART-III)

Carter and Cooper Sullivan, identical twins with a talent for trouble, are convinced that their unassuming junior high, Bloomfield, hides a secret. Whispers circulate about a hidden basement and, more thrillingly, evidence of a mysterious sarcophagus. When they finally uncover the entrance-a locked door leading to a secret staircase-they enlist their adventurous friends, Brody and Kylie, to investigate.

To their surprise, their eccentric, retired Irish detective neighbor, Mr. Amos Murphy, ca...