Lives of two male college students have been ruled ` ` accidental drowning '' Two retired NYC detectives believe this may be work of killer or murderer . At least 12 creepy smiley faces found where bodies were put in rivers , lakes . As Gannon and Duarte investigated the deaths , they began to see a trend . FBI : No evidence of tragic deaths or substantiating serial killer theory .
Lives of two male college students have been ruled ` ` accidental drowning '' Two retired NYC detectives believe this may be work of killer or murderer . At least 12 creepy smiley faces found where bodies were put in rivers , lakes . FBI : No evidence of tragic deaths or substantiating serial killer theory .