Last May, a fresh team of police investigators and prosecutors, headed by Mos, took over the vexing case in the hope that new eyes would find new leads to follow. That same month, Deepak and Satish Kalpoe, who were with Van der Sloot the night he met Holloway, were briefly rearrested, and a surprise search was conducted of their home, a modest, neon-green, single-story house, near the base of Hooiberg Mountain.
During the May search of the home, investigators allegedly planted bugs there so they could monitor the brothers' conversations, defense attorneys claimed.
Because of information gleaned from those wiretaps, all three men were rearrested last fall, but were all released for lack of evidence. Late last year, Mos announced that the case would be closed, essentially admitting defeat.
It was after that December release that De Vries' undercover investigation began in earnest.