Witnesses in Richard Clarke's murder trial have varied from his buddies, to police officers and detectives. The first to take the stand Wednesday was Ryan Miller. He's the guy who says he spent most of the day with Clarke leading up to Matthew Fitzhenry's death.

Miller told jurors on October 17th, 2010 he played pool with Clarke for a few hours, then took him to buy a Four Loco (caffeinated alcoholic beverage) and dropped him off at his house.

Miller is key in this case because he is the one police credit with leading them to the alleged murder weapon.

A detective asked Miller if Clarke had any kind of common route he took when he was stressed out. Miller said he does and told the detective Clarke always walks from his house on Georgia Avenue to the nunnery at McMenamins, then he walks down Tin Pan alley.

A day or so later, an aluminum bat was discovered -- in the shrubs along that path.

The aluminum bat was found by a Bend police officer. On Wednesday, he took the stand and told jurors how he was crawling around on his hands and knees when he spotted it.

Photos of the bat were shown to jurors, as well as the bat itself, wrapped in plastic. It was a pinkish color and it's missing the cap from the top. A black piece of rounded plastic was found in Clarke's house, lying near Fitzhenry after he had been attacked.

So at this point in the investigation, police have a possible murder weapon. It was found near where according to Miller, Clarke is known to walk when he wants to find cigarette butts to smoke to calm his nerves. Miller told jurors the route also took Clarke down Tin Pan Alley.

After finding this out, a Bend detective figured out the alley has surveillance cameras. He gets his hands on this grainy video from the night of the murder, and at 8:42 PM in the video a person matching Clarke's description appears.

The first call to 911 on the night of Fitzhenry's murder was at 8:45PM, but police later find out the surveillance video is 10 minutes slow...So when the person police believe is Clarke appears, it's actually 8:52PM.

With Clarke on video near where the bat is found, police sent it to the Oregon State Police Forensics Lab in Bend. On Wednesday, forensic scientist Tori Dickerson told jurors about what she found on it. Dickerson says she found blood and hair on the bat, and the aluminum was cracked in a few places. She tested it for fingerprints but was not able to lift any...which she told jurors is common.

That fact makes what Clarke's ex-girlfriend testified about Tuesday even more important. In a video deposition from Jessica Blair, Clarke's ex-girlfriend -- but not the ex girlfriend prosecutors say Clarke killed Fitzhenry over -- is shown having a little bit of a meltdown, and she asks to leave.

Then she calms down and drops this piece of information right into prosecutors' laps. She told them Clarke always carried leather gloves with him, in case he got in trouble. Blair went on to say specifically Clarke didn't want to leave fingerprints.

Right before court ended Wednesday afternoon a video testimony of Clarke's first cellmate was shown to jurors. On Thursday, another one of Clarke's former fellow inmates will take the stand.