One of the questions I see a lot of DMs asking is how to run an investigation or a mystery encounter or adventure. Their biggest concern is usually what happens if the PCs can’t figure out or roll well enough to pick up on the clues. And the answer to that is actually really simple – don’t gate progress in the investigation behind a skill check.
Put another way, the PCs shouldn’t be able to miss “key” clues. If not finding something would stop the investigation dead in its tracks, then they should just find it. If you still want a roll, failure doesn’t mean they miss it. Instead in this case a particularly bad roll may simply cause them to take longer to find it letting the culprit I’ve their plans further along while the heroes bang their heads against the wall. Or maybe they find contradictory information and have to figure out what’s correct and what’s a red herring. Good rolls on the other hand can cut the time needed to find the clues or provide greater context for the clue. Or they could find additional clues that provide supplemental information or more evidence for what actually happened.
A great system you can look at for inspiration for your own investigation based games is the Gumshoe line of games originally by Robin Laws and published by Pelgrane Press. This is where I picked up the core tenet of the PCs always finding the main clues. Definitely give them a look – there’s likely a release in your chosen genre. It powers many great games from Night’s Black Agents to Fall of Delta Green to Trail of Cthulhu and many others.
That will do it for today. We’ll see you back here tomorrow with more #RPGaDay2020!