Episode 5: Who is Sending? ​The air in Elias’s apartment felt stagnant, smelling of cold coffee and the metallic tang of fear. He sat at his kitchen table, staring at the "gift" the messenger had left behind: a single, charred skeleton key resting on a printout of his own bank statement. Every transaction related to the Mercury Project—payments he thought were untraceable—was highlighted in neon yellow.​He had to end it. No more running, no more avoiding the script. Elias was a man of logic, and logic dictated that every signal had a source.​He grabbed his laptop and connected his phone via