Deputies searching for missing Georgia teenager not seen in weeks By FOX 5 Digital Team Published (Columbia County Sheriff's Office) AUGUSTA, Ga. - Deputies in Columbia County need your help finding a missing Georgia teenager who hasn't been seen since the beginning of January. The Columbia County Sheriff's says 16-year-old Summer Michelle Rain Martin was last seen around 9 p.m. on Indian Creek Road on Jan. 2. Officials say Martin may be in Castle Pines Trailer Park on Mike Padgett Highway in Augusta, Georgia.