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just after the top of the hour, i'm john berman. >> and i'm bianna golodryga. prosecutors say he's been charged with the murder of his still missing wife. >> that's just the beginning. some of his searching were extraordinarily gruesome. prosecutors say evidence of blood was found in walshe's car, and he found protective suits, mops, cleaning supplies. we're outside the courthouse. this was an extraordinary level of detail, bryn, some of which we never have heard before. >> reporter: just stunning detail of the actions the prosecutors say brian walshe took after his wife ana disappea...

Investigators a blueprint of what to look for and where to look. what stood out to me, the first thing you have to do in a no-body murder kay is prove the person is indeed deceased. we have all the messages about disposal of a body, then the forensic evidence, now brian walshe in the evidence where that evidence and looked evidence, hacksaw, where that was found. that's how prosecutors put together that evidence. how dos dismember a body? how long will it take a body to disintegrate, form formaldehyde. and another interesting aspect, we're seeing motive. we're seeing motive come together from ...