An American teacher was jailed for child abuse in China in 2014. He still says he's innocent — if only anyone would listen.

Updated 8:59 PM ET, Tue June 8, 2021

Hong KongDavid McMahon hated the design of his classroom.

Located on the ground floor of the Pudong campus of the Shanghai French School, its almost floor-to-ceiling windows made him feel like he was "teaching in aquarium," in the words of one of McMahon's colleagues. Passersby couldn't help but look in, and their attention would inevitably distract the kindergarteners inside.
But when, in 2013, he was accused of abusing several of his students, the windows suddenly seemed to McMahon and his defenders a saving grace -- proof the claims being made against him could not have happened. How could he have molested multiple