Magician David Copperfield is facing allegations of drugging women before sexual encounters, groping women during live performances, and behaving inappropriately with women who were significantly younger than him — including under 18 — in a new investigative piece in The Guardian.

The story contains allegations from 16 women, spanning four decades, from the 1980s to 2014. Over half of those women said they were under 18 at the time of the alleged incidents, with the two youngest victims claiming they were 15 at the time (though there was no evidence to suggest Copperfield was aware of their ages when they met).

One of those 15-year-olds, identified as Carla (not her real name), said Copperfield “groomed” her for more than two years after he gave her his phone number following a 1991 show. The magician allegedly called her at home often and sent her cards and gifts, including one, which Carla received when she was 16, that said: “In 2 years I will be back.”