The Seraphim Independence Movement, or SIM, was a political resistance movement in the Seraphim System.
In 1922 PD, it was beginning to organize an armed overthrow of the corrupt and Solarian-controlled Macready Administration. For that purpose, some of its members made contact with Damien Harahap, whom they believed to work for the Star Empire of Manticore. (HH14)
- Indiana Graham. codename "Talisman"
- Mackenzie Graham, codename "Magpie"
- Leonard Silvowitz, codename "Saratoga"