Murdoch Mysteries S03 E07 Blood and Circuses

"Forensic sleuthing in the age of invention."

There's pandemonium at Police Station Four. Something has gone terribly wrong at Barnett's Travelling Royal Circus. Lulu, the white Siberian tiger went berserk and partially devoured its trainer before escaping into the streets. Lulu has since been shot and killed but rumors have started circulating that this wasn't simply a case of 'tiger gone bad'.