Outpost Eridani-7 Personnel file Classification: restricted access Crew complement: two Mission duration: four hundred sols Objective: long range sensor deployment and geological survey james enlisted sol one Specialization: reactor systems Previous post: station gamma Service record: unblemished blaine enlisted sol one Specialization: subspace communications Previous post: relay nine Service record: one incident Cleared for duty Psych evaluation: stable Both crew members passed final medical screening Blood work normal Cognitive function within acceptable parameters Sleep patterns regular No prior disciplinary actions Both volunteered for extended deployment Equipment certification current Vaccinations up to date Emergency protocol training completed sol ninety Background checks verified Next of kin notified

Personal log of james recovered from terminal three Entry dated sol eight The reactor is running smoothly but I keep hearing something in the walls Not mechanical Not the usual settling noises blaine says it is probably thermal expansion but I am not convinced The tapping has a pattern Three short One long Three short I have started logging the times It happens every forty-seven minutes blaine thinks I am imagining things but the pattern is too consistent I have checked all the systems Nothing is causing it The sound seems to come from everywhere at once I recorded it but the audio is just static

Personal log of blaine recovered from terminal seven Entry dated sol ten james is getting worse He has not slept in three days I found him at the ventilation shaft again Listening The tapping has stopped but he says it has changed to a hum I cannot hear it I am requesting emergency evacuation but comms are down This will be my last entry james locked himself in module four I can hear him talking to something I do not know what to do The lights are flickering I am scared If anyone finds this do not come for us