"It looks to be a modified Cruciatus. It was bound to the entrance in an abandoned Death Eater safehouse." Hermione informed Theo as she brushed her hand briefly up his arm in a gesture of comfort. The Cruciatus did not have a counter curse. One wasn’t needed, when the caster’s intent to harm ceased, so did the curse. Theo leaned over the bed, towards Malfoy's ear. 