Our Two Cuckoos is a written note found in Dishonored 2.
Durante, it's underway.
Your men will be released by the Shindaerey Mining Company as soon as we bring them a couple of replacements. You just need to drop two of the usual drunks into the crates I've prepared. Anyone reasonably healthy will do, but go easy on the drugging. The deal is off if they arrive dead.
Take this key. It opens the back room of my silvergraph studio. Whoever you nab, drop them into the crates and nail 'em shut. When you've done your part, leave the shop door unlocked on your way out. Needless to say, I won't be there.
This note can be found inside Durante's office in the Crone's Hand Saloon during the mission Dust District.