Ghost Chasers - Season 1 Episode 1 London

The team investigate paranormal activity in London's historic East End. First stop is the 'Ragged School', now a museum but in Victorian times a notorious school for the area's poorest children where beatings and bullying were commonplace. The team record the eerie voices of young children calling out - are these the ghosts of long dead children who once played here? Their second investigation takes place in the abandoned Woolwich Arsenal, once a massive munitions factory. Using a thermal imaging camera they pick up a creepy presence, but who or what is it?