From the Adventure Background:
"Loyal to a Fault" is the third and final scenario in the Council of Barons Arc. In the first two scenarios, the barons of Bissel begin aligning in two factions. One faction, led by Baron Zafar of Parulla, seeks to use the Council of Barons to ask the Margrave to abdicate because of his misrule. They are not, however, traitorous, seeking to work through Bissel's traditional assembly of lords. The other faction, led by Baroness Elina of Burning Stalks, supports the Margrave, partially out of loyalty but primarily because they believe that Evard the Necromancer poses an imminent threat that Bissel must present a united front against.
In the last days before the Council, the tensions within Bissel are mounting rapidly. Each faction is determined to recruit the undecided barons to their cause and is working hard to gather information that could persuade the undecided. The undecided barons are also looking for information to base their choice on. Meanwhile, nefarious forces have attempted to engineer a civil war by planting information to persuade each faction that the other faction is working for some of Bissel's worst enemies. This scenario is about the PCs being fed the false information and then determining that the opposing faction is not as bad as they briefly thought.
When "Loyal to a Fault" premieres, it will lead directly into an interactive that will resolve the arc. After the premiere, a conclusion wrapping up the arc based on the results of the interactive will be added to the end of the scenario.
PCs who have played "First Comes Marriage" and "Divide and Conquer" are generally members of one of the factions within Bissel. In particular, they may be loyal to Baroness Elina of Burning Stalks, to Baron Zafar of Parulla, or they may be unaligned. Because this adventure is part of the arc where the factions are relevant, it changes somewhat depending on who the PCs are aligned with. The changes do not change the gameplay dramatically; in general, only a few details change. Whenever possible, things are kept precisely the same. However, it is essential to the arc that DMs use the right set of names and information.
If all of the PCs are loyal to Baroness Elina, use the "Baroness Elina" encounters. If all of the PCs are loyal to Baron Zafar, use the "Baron Zafar" encounters. If the PCs are not loyal to either faction, or if they are mixed, use the "Baron Alron" encounters, which are frequently the same as the "Baron Zafar" encounters.