ORLANDO, Fla. - The lead prosecutor in the Casey Anthony trial said someone in the Anthony home conducted a computer search for "foolproof suffocation" on the last day 2-year-old Caylee Anthony was seen alive.
The Internet search was discussed in defense attorney Jose Baez's book, released last summer. Baez boasted that he found the search and was dumbfounded that prosecutors never brought it up at trial.
Channel 9's Kathi Belich learned that one reason Baez found things investigators didn't might have been that he had inside information from Anthony herself.
WFTV learned computer forensic work is so complex that unless investigators knew to look precisely for the word "suffocation" in Anthony's computer hard drive on June 16, 2008, they might never have found it.
Channel 9 first learned someone searched for how to make chloroform on the Anthonys' computer months before Caylee disappeared.
Orange County Sheriff's Office computer investigators found the information by specifically looking for the key words, though police couldn't prove Anthony was the one who performed the searches.
Investigators didn't find a search for "fool-proof suffocation" done just hours before Caylee disappeared, though prosecutors asked for that day's records.
The word suffocation had been misspelled, but Baez said his expert had no trouble finding it.
"The buck stops with the sheriff's office, because it was their responsibility to convey what evidence they had to the State Attorney's Office," said WFTV legal analyst Bill Sheaffer.
But sources close to the case said knowing exactly what you're looking for and where to find it makes a big difference.
Sheaffer said it's very possible Baez pressed Anthony for specifics about her computer searches so they could fight the evidence.
Baez led jurors to suspect Anthony's father, George Anthony, and they acquitted her.
Orange County Sheriff Jerry Demings would not talk to WFTV on Wednesday about what might have gone wrong and whether anything's been done to prevent the same problem.