Basically, “Mercy Shall Follow Me” closed the two biggest stories of Outlander Season 5 two episodes shy of the finale, which raises the question: what is Outlander supposed to do for the rest of Season 5?
The only big dangling plot threads at this point seem to be Claire meddling with the timeline by bringing modern medicine back to the 18th century, Young Ian’s mysterious departure from the Mohawk, and Jamie and Claire’s upcoming deaths by fire as recorded by the obituaries that brought Bree back in time in the first place.