Bequin joined the Inquisitor's team on the planet of [[Hubris]] while he was searching for the mass-murderer [[Murdin Eyclone]], who had killed 12,142 citizens of the planet in a failed attempt to resurrect [[Pontius Glaw]]. At that time, she had been working as a pleasure girl in the Sun Dome for four years under the pseudonym of "Lyse Lise B". She came to Eisenhorn's attention during a raid on a suspected [[cultist]] hideout, when she saved his life by killing his would-be attacker.{{Fn|2a1a}}

According to Bequin, she had been an outcast for most of her life, and not particularly successful in her latest profession. Eisenhorn, a [[psyker]], was quickly able to discern the reason: she is a [[Blank]], a staggeringly rare attribute that nullifies the effects of [[psychic]] or [[daemonic]] effects in her vicinity. This aura had the unfortunate side effect of making her naturally repellant to most other humans, including non-psykers, despite her outstanding beauty. Eisenhorn himself was repulsed, but quickly saw the value of having a Blank in his [[Inquisitorial retinue|entourage]], and offered her temporary employment.{{Fn|2a1a}}{{Fn|2b1b}}

She quickly proved to have a talent for undercover operations, posing as Eisenhorn's spoiled wife when he infiltrated [[House Glaw]] posing as a wealthy merchant.{{Fn|1c}}{{Fn|1d}} When the ruse was uncovered, she also proved to be tough and cool-headed in many difficult situations, including escaping from a gladiatorial arena when Eisenhorn and his team were meant to be slaughtered by a [[Carnodon]], and in combat with House Glaw and its retainers, including the [[Chaos Space Marine]] [[Mandragore]] of the [[Emperor's Children]].{{Cite ThisFn|1f}}

Before embarking on their final confrontation with House Glaw, Eisenhorn gave her the chance to back down, and was impressed when she refused, determined to see the matter through to the end. In her spare time, she received weapons training from [[Godwyn Fischig]], and was competent and cool-headed with dual [[laspistol]]s by the time of the final battle. {{Fn|1g}} Eisenhorn was impressed by how far she had come in the few weeks since he had met her, and by the end of the [[Necroteuch]] affair, she was a permanent member of his team.{{Cite This}}

**{{Endn|1b}}: Chapter Five**{{Endn|1c}}: Chapter Seven**{{Endn|1c1d}}: Chapter Nine**{{Endn|1e}}: Chapter Eleven**{{Endn|1f}}: Chapter Twenty**{{Endn|1g}}: Chapter Twenty-three