Nadanova, an Oxford scientist has a large knowledge about nano-technology, making her more than a little useful to her boyfriend, Diavolo. She dies when Bond blows up her and Diavolo's plane, although Diavolo ejects just in time.
Nadanova is first mentioned in the pre-level briefing for "A Long Way Down", in which it is revealed that MI6 believes she has been kidnapped for her knowledge of nanotechnology. After the level, she is seen being forced onto a train, which Bond rescues her from. The two then commandeer a helicopter and use it to shoot down her kidnappers and return Katya to her home, where Nikolai Diavolo waited to see if her mission was successful. She replies that it was, and that all but one nanobot were destroyed. She then gives the nanobot to Diavolo. She is later seen in "Vertigo", pushing Serena St. Germaine out of a helicopter. Bond later spots her and Diavolo leaving New Orleans. It is then revealed that Katya developed the Nanobots to repair nuclear reactors, but Diavolo had used the last of her original Nanobots to create a new one that would destroy any metal it came across, except for platinum: the material they are made of. Later, in Puerto Viejo, Peru, Katya finds Bond trespassing in a Platinum mine, and she tranquilizes him and brings him to Diavolo, and when he is finished with him, Katya sets a mining drill to burrow through him. Oblivious to his escape, she, Diavolo, and Jaws launch their platinum coated attack on Moscow. She finds Bond again in an underground hangar and orders some troops to kill him, and unbeknownst to Katya they are unsuccessful. Katya and Diavolo then begin the launch sequence for eight former nuclear missiles that have had their long-since deactivated warheads replaced with Nanobot payloads. Bond deactivates the missiles, and the two try to flee the facility in a hoverjet, but Bond destroys it and Katya plummets to her death, while Diavolo ejects in time.