Summary
Written by a model from the transcript; not yet reviewed.
This episode of Park Predators examines the July 1975 murder of 20-year-old David Perry Llewellyn in Tulsa, Oklahoma's Mohawk Park. Host Delia D'Ambra details how a family reunion organizer discovered David's bloodied body inside a picnic pavilion, sparking an investigation that ultimately led to the arrest of 23-year-old Owen Swain and 18-year-old Mark Osterloh. Driven by a petty drug debt over cannabis, the two men had robbed David after meeting him, taking his car, cash, jewelry, and CB radio. The case wound through complex legal battles regarding whether a belt and log constituted dangerous weapons under Oklahoma's armed robbery statutes, initially resulting in death sentences before appellate rulings modified their convictions to second-order sentences of 10 years to life. Both men remain incarcerated decades later, leaving behind a tragic reminder of vulnerability in public urban green spaces.
- Even well-traveled and popular urban parks are not immune to random acts of violence. 2:42
- Investigators located David's stolen vehicle at an apartment complex after receiving a tip from an informant. 7:34
- An appellate court ruled that a belt used during a robbery was not a dangerous weapon, altering the murder charges. 17:36
- Owen Swain expressed remorse to the parole board during unsuccessful clemency hearings in 1989 and 1990. 31:02
Chapters
- 0:00Intro and Ad Break
The episode opens with a promotional ad for SimpliSafe security systems, setting the tone before the host begins.
- 1:14Setting the Scene: Mohawk Park Overview
The host describes Mohawk Park’s size, amenities, and her discovery of the case while researching a prior episode.
- 2:56The 1975 Murder: Grace Brightman’s Discovery
Grace Brightman finds a murdered man in a pavilion, leading to a homicide investigation and the identification of the victim.
- 4:59Victim Identification and Autopsy Findings
Police identify the victim as David Perry Llewellyn and determine he died of strangulation and blunt force trauma.
- 6:18Investigation Hurdles and Missing Evidence
Investigators struggle to find the victim’s wallet, trousers, and the car, creating gaps in the case timeline.
- 7:10Emerging Leads: Car and Stolen Items
A tip leads to the victim’s car, which has been stripped of valuables, and links to juvenile suspects who are not charged.
- 11:09Prime Suspects Emerge: James, Owen, and Mark
James Summers provides information that connects Owen Swain and Mark Osterloh to the murder, leading to their arrests.
- 17:36Legal Challenges and Sentencing Changes
Appellate rulings shift charges from second- to first-degree murder and later modify sentences, reflecting evolving legal interpretations.
- 19:58Trial Proceedings and Witness Testimony
The trial features key witnesses, including family members and a former drug dealer, presenting conflicting accounts of the crime.
- 29:02Appeals, Clemency, and Current Status
Both defendants appeal, seek clemency, and remain incarcerated, with the case highlighting the complexities of post-conviction relief.
- 32:03Victim Background and Legacy
The host shares details about David Llewellyn’s life, family, and the broader impact of his untimely death.
- 34:01Closing Remarks and Final Thoughts
Delia concludes with reflections on the ubiquity of violence in familiar spaces and promotes the podcast’s resources.
Highlights
- 4:00
While setting up for a family reunion at Mohawk Park, Grace Brightman discovered the bloodied nude body of 20-year-old David Llewellyn inside a picnic pavilion.
- 5:26
Autopsy and Cause of Deathdata
An autopsy determined that David died from ligature strangulation using a small cord and severe blunt force trauma to his head.
- 7:34
Stolen Car Recoveredstory
Police located David's missing Dodge Coronet at an apartment complex after an informant's tip, though thieves had stripped it of valuables including a CB radio.
- 11:09
The Informant's Tipinsight
James Summers contacted police to report that Owen Swain had accumulated a drug debt and threatened to cut someone's throat to pay it off.
- 17:42
Legal Debate on Dangerous Weaponsdebate
Prosecutors initially charged second-degree murder because state law lacked a firm definition for armed robbery using non-traditional weapons like belts or logs.
- 21:52
Contradictory Physical Evidenceinsight
The senior investigator testified that David's neatly folded shirt had no blood on it and showed no signs of dragging, contradicting the suspects' alleged confession.
- 29:23
Sentence Modificationstrategy
The appellate court ruled that a belt did not legally constitute a dangerous weapon in an armed robbery, forcing the trial court to modify the death sentences to second-degree murder.
Quotes
“Even in well-traveled, popular urban parks, bad things can happen.”
Unnamed speaker · 2:42 “The investigator testified that it had been, quote, 'laid down purposefully and carefully', end quote.”
Unnamed speaker · 22:44 “The appellate court essentially said that armed robbery could involve any item used in a dangerous manner, not just a knife or gun.”
Unnamed speaker · 19:07 “The real cost of a break-in isn't your valuables, it's the feeling that your home stopped being safe.”
Unnamed speaker · 26:06
Sponsored segments
- SimpliSafe 0:04–0:29
- SimpliSafe 9:28–10:04
- SimpliSafe 26:06–26:37
- Quince 26:46–27:55
- Park Predators 34:19–34:37
- In the Dark 34:44–35:10
About this episode
When a young man’s body is found in a picnic pavilion in Tulsa’s Mohawk Park stripped of clothing and belongings, law enforcement is left with many questions. But within a matter of weeks, clues begin to emerge and authorities zero in on not one…but two killers
Transcript
5,858 words · 8 speakers
Topics
- Tulsa
- Mohawk Park
- Oklahoma
- CB radio
- Owasso
- Crime Junkie
- The New Yorker
- visittulsa.com
- River Parks Trail
- Dodge Coronet
Page updated · transcript and summary are machine-generated