Authors and readers alike seem to love series. When an author builds a compelling world, one cannot help wanting to revisit again and again. So, with this month being series catch-up month on the TBR Challenge, we both went back into beloved series. Caz went with a gritty mystery that is one of a series following an m/m relationship while Lynn read one of the Rannoch/Fraser novels, a historical romantic suspense series that follows the leads'  marriage of convenience as [...]