Quests
Quests are offered at the beginning of turn 4 (6 gold). The quest texts utilize placeholders like {0} (for example in the text "Spend {0} Gold."), which are replaced by an actual numeric value based on the armor value of the hero you are playing (heroes with more base armor will receive easier to complete quests) and the minion types in the lobby. The baseline value for each quest is documented on the details page. Finishing a quest will provide you with the attached reward.
Assemble a Lineup
Burn the Evidence
Crack the Case
Cry for Help
Dust for Prints
Exhume the Bones
Fill the Cauldron
Find the Murder Weapon
Follow the Money
Hire an Investigator
Invite the Guests
Pressure the Authorities
Reenact the Murder
Round up the Suspects
Sort It All Out
Track the Footprints
Unlikely Duo
Unmask the Culprit
Witness Protection