residue. Three days later, the Royal Canadian Mounted Police, armed with an arrest warrant for Anita Pallenberg, discovered of heroin in Richards' room. He was charged with importing narcotics into Canada, an offence that carried a minimum seven-year sentence. The Crown prosecutor later conceded that Richards had procured the drugs after his arrival. Despite the incident, the band played two shows in Toronto, only to cause more controversy when Margaret Trudeau, then-wife of Canadian Prime Minister Pierre Trudeau, was seen partying with the band after one show. The band's shows were not advertised to the public. Instead, the El Mocambo had been booked for the entire week by April Wine for a recording session. 1050 CHUM, a local radio station, ran a contest for free tickets to see April Wine. Contest winners who selected tickets for Friday or Saturday night were surprised to find the Rolling Stones playing. On 4 March, Richards' partner Anita Pallenberg pleaded guilty to drug possession and incurred a fine in connection with the original airport incident. The drug case against Richards dragged on for over a year. Ultimately, he received a suspended sentence and was ordered to play two charity concerts to benefit the Canadian institute for the blind in Oshawa; both shows featured the Rolling Stones and the New Barbarians, a group that Wood had put together to promote his latest solo album, which Richards also joined. This episode strengthened Richards' resolve to stop using heroin. It also ended his relationship with Pallenberg, which had become strained since the death of their third child, Tara. Pallenberg was unable to curb her heroin addiction as Richards struggled to get clean. While Richards was settling his legal and personal problems, Jagger continued his jet-set lifestyle. He was a regular at New York's Studio 54 disco club, often in the company of model Jerry Hall. His marriage to Bianca Jagger ended in 1977, although they had long been estranged. Although the Rolling Stones remained popular through the early 1970s, music critics had begun to grow dismissive of the band's output, and record sales failed to meet expectations. By the mid-1970s, after punk rock became influential, many people had begun to view the Rolling Stones as an outdated band. 1978–1982: Commercial peak The group's fortunes changed in 1978, after the band released Some Girls, which included the hit single "Miss You", the country ballad "Far Away Eyes", "Beast