Well, crap like this:

He made anchors for sure.

He bleached the floors and walls the day after the maid came for sure.

He washed his clothes only (not the other dirty clothes) before he called the police.

He studied tides and depths of the bay (where her body was found) on the computer.

He told one neighbor he went golfing and everyone else he went fishing.

His boat wasn't for fishing in the bay.

The weather wasn't for fishing in the bay.

The fish he said he was fishing for are to big to fish for out of that boat.

The reasoning for fishing instead of golfing was that the weather is to cold. The weather in Modesto is at least 20 degrees warmer then the bay!

He says he last saw her on the 24th, but her body was discovered in the clothing that she was wearing on the 23rd.

The neighbors saw him carrying out tarps with something large in them. He says that it was umbrellas, yet he can't provide where the umbrellas or tarps now are.

There was cement residue (from the anchors) in his boat.

There was Laci's hair on a pair of pliers in his boat.

I can go on and on. But sadly enough, all this evidence is just circumstantial. It isn't hard physical evidence. They have no eye witnesses, they don't even know how Laci was killed. They don't know if Conner was killed before or after Laci gave birth. They don't even know when they died.

Also, the head detective was apparently a real airhead. Stupid things happened like he forgot his keyes in Scott's truck after searching it. Left his clipboard with the notes from the search in Scott's boat by accident. So, they're saying the little evidence that they had was mishandled. Etc, etc...