Thirty-four-year-old Melissa Halstrom is going on trial on sex charges

Thirty-four-year-old Melissa Halstrom is going on trial on sex charges, including inducing a minor into prostitution and deriving support from a prostitute with her alleged business partner, Anthony Gorgoglione Jr., of Millbury.Trial of a North Andover woman accused of running a prostitution ring out of her apartment is scheduled to continue this week.The two are accused of recruiting teenagers to be "call girls," supplying them with drugs to help calm them down and setting them up on $200-an-hour sex sessions.Both have pleaded not guilty.The trial in Lawrence is set to resume Monday after being held up last week by jury selection delays.They were arrested in September 2007 and police said they had been running a sex-for-money operation for months.