NUCLA, Colo. (KREX) — Interim DA for the 7th Judicial District Jessica Waggoner announced that James Daniel Bishop had been arrested for First Degree Murder more than 20 years after Dale Williams' disappearance. Filing of charges is set for Oct. 29, but how has this quarter-century old cold case finally made a breakthrough? PREVIOUS COVERAGE: Arrest made in 25-year-old Montrose County cold case 42-year-old Dale Williams was a longtime resident in Nucla, Colorado. On May 27, 1999, Williams was working at his auto shop when he got a call from a woman asking for help with her vehicle near the town of Bedrock, about half an hour away. Family Market Employee Katie Squires said an old coworker saw Williams stop in on his way out of Nucla, making the market the last known place he was seen. July 4, 1999 - a family swimming at the confluence of the Dolores and San Miguel rivers discovered Williams' truck submerged underwater. A .22 caliber rifle was found in the bed of the truck. According to an arrest affidavit, the ATF discovered the rifle was purchased at the Nucla True Value Hardware store on March 16, 1996 by James Daniel Bishop. Bishop was known to show some resentment towards Williams before his disappearance; the affidavit confirmed Bishop was resentful of Williams' close relationship with Bishop's wife. Williams had found torn-up photos and .22 caliber bullets scattered on the ground at Williams' business. His wife also discovered a .22 caliber gun in the drop box of the video store she worked at. After his disappearance, Bishop was seen taking down missing posters of Williams in the Post Office. Furthermore, Williams and his wife helped Bishop's wife secretly move away to get out of her relationship with Bishop. In a Colorado Bureau of Investigation (CBI) interview with Dan Bishop before his arrest, Bishop claimed he did not kill Williams. According to the affidavit, he also switched his story and timeline around several times after authorities caught him in lies. The last page reads, "these acts would require more than one person to complete following the murder of Dale Williams." So who else is involved? Bishop's cousin, Veldon Barnes, could be tied to the case because of a Corvette. Dan Bishop and Veldon Barnes, who's now deceased, were known to have been outside of Williams' shop when he left May 27. Bishop had given his prized Corvette to Veldon, a criminal arrested several times before, who then drove it back to Grand Junction, then to Colorado Springs to sell it later on. Who pulled the trigger that day almost 25 years ago? Some of the details may be washed away, but authorities believe Dan Bishop is guilty. Authorities have not directly stated if they believe Barnes was the one who shot Williams, but a line from the affidavit said authorities "asked Dan directly if Veldon killed Dale Williams and he replied, 'I believe that he did.'"