A Palmyra man is in jail tonight and faces 20 felony counts of incest after police say he carried out a 4-month-long sexual relationship with a 14-year-old family member.Jessie Grimes, 33, Palmyra, is also charged with 20 felony counts of sexual misconduct with a minor and two felony counts of dissemination of matter harmful to a minor.This activity had allegedly occurred between August of 2015 and February 1st of this year in Harrison County. The charges come just four days after Indiana State Police were contacted by the Department of Child Services about the reported misconduct.Grimes was arrested on the charges of Incest, 20 Counts; Sexual Misconduct with a Minor, 20 Counts and Dissemination of Matter Harmful to Minors, 2 Counts.According to court records, the 14-year-old girl told a friend that she and Grimes had been in a sexual relationship. That friend notified an adult, who then contacted the Department of Child Services.The girl told police during a forensic interview that the relationship had been going on since August 2015. It reportedly began when Grimes started talking to the child about sex and “showed her pornographic videos to educate her.”Then in September, Grimes began having sex with the girl, according to the probable cause affidavit filed in Harrison County Superior Court. The girl told investigators that she and Grimes had sex once or twice a week since then. She also gave detailed descriptions about some of the encounters, including how Grimes made her wear lingerie. The encounters reportedly took place in a Palmyra home.This afternoon Indiana State Police trooper Chris Tucker from the arrested Grimes in Harrison County.He was arrested after an arrest warrant was issued out of Harrison County that involved Jessie Grimes allegedly having sex with a family member.Trooper Tucker conducted his investigation while working with the Harrison County Department of Family and Children.Grimes was arrested on the charges of Incest, 20 Counts; Sexual Misconduct with a Minor, 20 Counts and Dissemination of Matter Harmful to Minors, 2 Counts.