Investigations
Source GM Core pg. 35
Investigating and searching for clues is another common exploration scene. Lead with a definite clue that has details but clearly isn't the whole picture. For example, you might say: “This vidgame console looks similar to the ones commonly available for purchase, but it's clearly been modified for some kind of additional purpose,” or “This biotech laboratory has a dozen specimen cells lining the walls, each shut with heavy steel doors and an electronic lock that glows with a steady green light. One of the cell doors is ajar, and its lock flashes red.”
If these details pique a player's interest, transition to a more detailed investigation. They might look at the vidgame console more closely or search the ajar specimen cell. Avoid calling for checks if it isn't necessary. In the last example, you'd likely tell them the specimen cell is empty without another Perception check, and if the missing specimen left a trail you want the PCs to follow, asking for a Perception check to find it might stall the investigation in an uninteresting way. Discerning information about the missing specimen from clues in the cell or a nearby computer console could require a skill check, as lacking this additional information won't stop the investigation.
Though one person starts the investigation, getting others involved can help them become more interested and bring different skills to bear to get other types of information. Reward collaboration and clever ideas.
If these details pique a player's interest, transition to a more detailed investigation. They might look at the vidgame console more closely or search the ajar specimen cell. Avoid calling for checks if it isn't necessary. In the last example, you'd likely tell them the specimen cell is empty without another Perception check, and if the missing specimen left a trail you want the PCs to follow, asking for a Perception check to find it might stall the investigation in an uninteresting way. Discerning information about the missing specimen from clues in the cell or a nearby computer console could require a skill check, as lacking this additional information won't stop the investigation.
Though one person starts the investigation, getting others involved can help them become more interested and bring different skills to bear to get other types of information. Reward collaboration and clever ideas.
Roleplaying Investigations
Source GM Core pg. 36
To make the investigation feel real, it helps to talk a player through their character's thought processes by saying what clue inspired them to think of an important detail, explaining what the detail is, and possibly mentioning further questions that this detail raises. Let the player extrapolate their own conclusion rather than giving them the answers outright. Even if the investigation doesn't lead to an unambiguous conclusion, the players should feel they're more informed than when they started.