bya cool thing about AC Unity is you can murder several enemies (Sans-culottes I guess? because this game's plot is bad?) on your way to investigating a murder, and then have guards on your ass who you ALSO have to kill (to continue investigating the murder).
the murder I'm investigating is of three descendants (two dead, one avoided being killed) of medieval torturers who changed their names to avoid consequences, and who were then identified because they all have torture museums in their house.