The "compromised" nature of the crime scene in the drowning death of actress Pattarathida "Tangmo" Patcharaveerapong -- or Nida -- who reportedly fell into the Chao Phraya River from a private speedboat with fatal consequences, could well have been averted with better professional conduct by law enforcement and experienced police interrogators, according to former police investigator-turned-criminologist, Krisanaphong Poothakool.