ESPN investigative report: One-time Berkshire camp counselor allegedly abused 41 men, boys

Mainwaring worked with hundreds of boys at Camp Greylock, as shown in this photo from a camp yearbook.

ESPN will be airing an investigative report on an accused serial molester of 41 boys and young men, some of whom became his victims while they attended Camp Greylock for Boys in Becket in the 1970s.

ESPN reporters Mark Fainaru-Wada and Mike Kessler began their investigation into longtime track coach Conrad Mainwaring in 2018, and they'll share their exhaustive report on "Outside the Lines" at 9 a.m. Sunday on ESPN.

Hundreds of hours of interviews went into ESPN's dive into Mainwaring's past. It culminated in a deep report that details how Mainwaring, a former Olympian, allegedly molested a 12-year-old boy in the 1970s at Camp Greylock, as well as others, up until he left the camp in 1979-80; ESPN's report says Mainwaring allegedly has continued preying on dozens of young men and boys through the present day.

Mainwaring used his status as a former Olympian and a fatherlike presence to manipulate young males into "physiotherapy sessions," which invariably end in an alleged sexual assault, the report shows.

The yearlong fact-finding effort spanned five decades and two continents — and eventually led Los Angeles Police to arrest Mainwaring in June. Police arrested Mainwaring on one count of sexual battery by fraud, a felony that could land Mainwaring in prison for four years. He pleaded not guilty and is out on bail.

Camp Greylock is still in operation today, and on its website it highlights its commitment to "citizenship, sportsmanship, fair play, and friendship" since 1916; in the report, the camp commented briefly through an attorney, who emailed ESPN to say only that its operation today has nothing to do with Mainwaring and the alleged assaults.