Gérald Gallant was a contract killer at the centre of a shifting roster of gangsters accused of carrying out 28 homicides and 13 attempted murders over three decades, peaking with Quebec's biker war from 1994 to 2002. Ten suspects were rounded up yesterday, based on evidence Mr. Gallant provided after turning informant. An 11th person facing a murder charge remained at large. In Donnacona, the news was met with stunned mutters that there was always something strange about the man. "I would see him regularly touring around the streets by bike," said Mayor André Marcoux, who lived three streets down from Mr. Gallant. "He really kept a low profile." From his unassuming redoubt near Quebec City, Mr. Gallant was in the middle of a gang war that eventually killed 160 people, police said. He and...