In July 2015, 60-year-old Mary Yoder walked into work at her chiropractic practice in Whitesboro, New York, feeling fine. Within 48 hours, she was dead. At first, doctors suspected a rare infection. But months later, toxicology results revealed something shocking: Mary died from a massive overdose of colchicine, a prescription medication she was never prescribed. Colchicine isn’t an over-the-counter drug. It’s not something people casually have access to. And the amount found in Mary’s system was far beyond a therapeutic dose. Mary’s husband of nearly 40 years, Dr. William “Bill” Yoder, initially appeared devastated. But after her sudden death, his behavior raised questions among family members,  including a rapid new relationship with Mary’s own sister. As investigators in Oneida County, New York began digging, an anonymous letter arrived accusing someone close to Mary of the poisoning. When detectives followed up on the tip, they made a discovery that turned the entire case upside down. In this episode of Crime Junkie, Ashley Flowers and Brit Prawat unravel the anonymous letter that redirected the investigation and the evidence found in a Jeep that no one saw coming What began as a medical mystery quickly evolved into a murder investigation that divided a family and a community. And this is only Part 1. Are you a part of Ashley's Summer Watch Challenge? Text "BESTIES" to 317-733-7485 to stamp your bingo card. Not apart of Ashley's challenge and want to join? Text "WATCH IT" to 317-733-7485 to join! Key Episode Moments: 0:00 Intro 0:44 A Routine Day: July 20, 2015 2:11 The Mystery Diagnosis 3:32 Toxicology Reveal: A Massive Colchicine Overdose 5:08 Investigating the Source 7:33 Suspect #1 16:06 A Shocking Announcement 20:37 The Anonymous Letter 24:33 The Jeep Search -------- Follow Crime Junkie: Instagram: https://www.instagram.com/crimejunkiepodcast Facebook: https://www.facebook.com/CrimeJunkiePodcast/ Twitter: https://twitter.com/CrimeJunkiePod Crime Junkie is created and hosted by Ashley Flowers. About Ashley Flowers Ashley Flowers is the top female podcaster in the U.S. and the host of Crime Junkie, the #1 podcast among women and the #1 true crime podcast globally. As the Founder of audiochuck, she has built a top-tier podcast production company that has garnered over 2.6 billion downloads, captivating audiences with its gripping storytelling through 10+ chart topping podcasts. Ashley and her team are dedicated to creating responsible true crime content that respects victims and their families. Follow Ashley: Instagram: https://www.instagram.com/ASHLEYFLOWERS/ Twitter: https://twitter.com/ash_flowers TikTok: https://www.tiktok.com/@ashleyflowerscrimejunkie Facebook: https://www.facebook.com/ashleyflowers.af/ Check out these other great crime channels: @kallmekris The Disturbing Disappearance Of Lily and Jack Sullivan https://www.youtube.com/watch?v=fQskumv3CPI @rottenmangopod Kidnapping Of Nancy Guthrie: Who's The Man In Camera? Why Is Internet Pointing Fingers At Son-in-Law https://www.youtube.com/watch?v=zB8Dh1MvpKA @KendallRae He Was Texting Other Women With Her Body In The Trunk: The Case Of Jessie Bardwell https://www.youtube.com/watch?v=tvLxNaRTmiw @EleanorNeale The Hunt to Catch the 'First Date' Killer https://www.youtube.com/watch?v=_nMsYt_MNLE&t=4s