Silvermoon takes a closer look at the Alphatian, to see if he is dead as assumed and if so, whether there are any obvious clues about how he might have died (i.e. any visible wounds). But before she does, she'll cast Energy Buffer and Superior Resistance (shared with Skreg). If the poor sod is dead and Silvermoon cannot do anything for him now, she'll concentrate on her task for now. She will first try to open the lock with her mundane skills, thereby trying to figure out what kind of protection that spell might grant (also using Spellcraft, if possible). She doesn't really expect this to work, but maybe help in finding out what spell has been used. Assuming, that she won't be able to open it that way (if the spell is similar to an Arcane Lock, it simply won't work), Silvermoon will have to prepare a few more spells. She'll then sit down in a dark corner and pull out her spellbook, hidden behind some luggage, with her light on minimum level, that she needs to read, and covered so it isn't seen from afar (i.e. holding a thick piece of cloth over the light and her book, so the light only illuminates the pages), while Skreg takes up watch, staying close enough to benefit from the invisibility spell (which is running for 24 minutes total, since it is extended).
