The marines that where with 'the dude that was killed' took them on a raptor to Pegasus.
Thats why Adama said to Cain that they had to have a trail on his ship because the crime was comitted on Galactica. Of course Cain didnt agree ( duh she knew they were gonna get away with it ) and she heared them out, found them guilty.
Adama got pissed because they didn't have their case heared by a jury.
Soo he send a raptor to get is men. And they ended up almost shooting each other up:) the rest you know
So yeah they killed the guy on Galactica, in Athena's cell. And the marines who where there escorted them in a raptor to Pegasus.
Thank you! That makes sense. So the query that was made earlier on about how they got them on to a raptor without anyone flagging it was probably because everyone didn't think any of it or if they did, they didn't realize it was a wrongful arrest. Thanks Nan!!