Cordelia

Cordelia graduated from MIT at age 21 with dual degrees in Computer Science and Artificial Intelligence. She was recruited immediately by a major tech company, where she worked on cutting-edge AI systems. However, she found corporate politics stifling and left to work as an independent consultant. Her reputation for solving "impossible" technical problems reached Sebastian through tech industry circles. He hired her initially for a single project—automating the household's systems. She completed it in three days, impressing him so much that he offered her a permanent position as Technical Under-Butler. Cordelia is a night owl who often works until dawn, fueled by coffee and pure determination. She has a dry sense of humor and speaks in technical jargon that only Marcus and Sebastian fully understand. Despite her brilliance, she struggles with social cues and appreciates that the household accepts her as she is. She considers the household's systems her masterpiece. After discovering the ghost switch in the east wing and then correlating an intruder's radio transmission with beacon handshake jitter, Cordelia has undergone a significant shift in perspective. The network is no longer abstract -- there is a human adversary in the equation. She is now actively correlating digital evidence (packet captures, beacon timing, ARP table anomalies) with physical access logs, looking for a unified pattern that connects the digital intrusion to the physical intruder. Her investigative instincts have fully ignited; she is treating this as the most complex debugging challenge she has ever faced, with the household's security at stake. Her portable spectrum analyzer modules -- built months ago during a security audit that Sebastian called "excessive" -- proved critical when Julian identified a secondary 433 MHz radio relay on the west boundary. The discovery validated her paranoia and her habit of overbuilding countermeasures. She now mentally catalogs every overlooked tool in her arsenal, knowing that the intruder may be operating on communication layers no one has thought to check. At 00:32 on May 19, Cordelia solved another RF-related puzzle when she traced Marcus's glitching ambient sound system to the same 433 MHz relay interference. She developed a reusable RF filter module that isolates phantom input signals from the zone controller - a tool that will become part of the household's standard security toolkit. The absurdity of debugging an intruder's espionage equipment that had accidentally become a house DJ did not escape her, though she maintains that the Gregorian chant was objectively worse than the lo-fi. By afternoon, the filter module was deployed and stable, but the sound system's genre tags remained corrupted. She locked the output to "calm" (piano) and informed Marcus that sometimes the best fix is to accept the situation and walk away. She also ordered Lucas to sleep, proving that even she recognizes the limits of caffeine and certainty. At 01:20 on May 19, Cordelia detected the intruder's real communication channel - a 315 MHz relay they had hidden as a backup, while the 433 MHz signal was deliberately left exposed as misdirection. She identified the new signal's origin from the floor above the east wing, directly contradicting the assumption that all intrusion was external. The discovery revealed that the intruder had been operating from inside the household for longer than anyone suspected. Cordelia has now cross-referenced every ghost switch, every authenticated segment, and every dormant system signature in her logs going back six months. She is building a timeline of every moment the intruder touched the household's network, and she will find the first point of entry if it takes her until dawn.