Legion of Super-Heroes (2005) # 4

Invisible Kid's father, a member of the Science Police, sends out a warrant against every member of the Legion of Super-Heroes after he learns that his son has joined them. However, it seems that what his father really wants is the invisibility serum that Invisible Kid has created for the Science Police to use. When Invisible Kid informs Brainiac 5 and Cosmic Boy that his father is a Science Police Chief, they feel utterly betrayed. To make things right, Invisible Kid goes to his father with a sample of his blood, since he injected the serum. His father accepts the serum and mentions how he wants his son back, but that's all the Invisible Kid is willing to give. The serum actually held a computer virus that allowed the Legion of Super-Heroes to enter the Science Police databanks. The serum itself was stolen by a man named Praetor Lemnos.