A few months after the death of the traitorous High Lord Goge Vandire and the end of the Wars of Apostasy, the Imperial Palace was once again rocked by the violence of all-out war. This time a far more sinister element was involved: the Officio Assassinorum. Somehow, entrance to and from the palace had been barred, despite no order coming from the High Lords. Trapped within its confines, many had barricaded themselves in their chambers as the palace echoed to the sound of gunfire and shook with the force of devastating explosions. Vandire had managed to corrupt many within the Officio Assassinorum, just as he had bribed and blackmailed his way to influence within the Adeptus Astra,Telepathica, Ecclesiarchy, Administratum and Astra Militarum. Foremost amongst his agents was one Tziz Jarek of the Callidus Temple. Using Polymorphine, Jarek had assassinated the true Grand Master and assumed his identity. However, unbeknownst to Jarek, the Grand Master had expected such a plot and had a loyal Callidus Assassin take his place in his chambers. So it was that Jarek had not killed the true Grand Master, who secretly mustered those Assassins still loyal to him to fight against this usurper.

在叛國的高領(lǐng)主高格 范迪爾死亡，以及叛教戰(zhàn)爭結(jié)束僅僅數(shù)月之后，帝國宮再次遭到了一次全面戰(zhàn)爭的沖擊。一支遠為險惡的勢力——刺客庭這次也卷入其中。盡管高領(lǐng)主們并未下達命令，但不知何故，宮殿的出入口都被封死。宮室內(nèi)回蕩著槍聲，毀滅性爆炸釋放的沖擊力令建筑體顫抖，許多被困于其中的人們把自己關(guān)在房間里躲避危險。范迪爾成功地腐化了刺客庭中的許多成員，就像他通過賄賂和脅迫來影響阿斯塔特修會、星語廳、國教教廷、政務(wù)部和星界軍那樣。他麾下最重要的特工是卡利杜司神廟的刺客——齊茲·雅雷克。雅雷克利用多位體藥物（進行易容），暗殺了真正的大導(dǎo)師并偽裝易容出了對方的特征。但雅雷克并不知道的是：大導(dǎo)師早就預(yù)料到會有這種陰謀，于是派了一名忠誠的卡利杜司刺客待在自己的房間中。也正是雅雷克未能殺死的這名大導(dǎo)師集結(jié)起了仍舊忠于自己的刺客們?nèi)ヅc篡位者們交戰(zhàn)。

A heinous battle raged within the Imperial Palace itself, with many innocents dying as the Assassins brought their terrible skills to the war. The ancient arsenal of the Officio Assassinorum was opened and terrifying weapons used once more, weapons whose use had been banned by the Senatorum Imperialis since their discovery. Gene-sympathetic nerve gases polluted the corridors, while neutronic warheads destroyed whole wings of the Palace. In the end, the true Grand Master assassinated Jarek and then disappeared in self-imposed exile. It was this chain of events that led to the formation of the Ordo Sicarius, that branch of the Inquisition that is specifically tasked with ensuring the Officio Assassinorum remains as true to the goals of the High Lords as humanly possible。

帝國宮內(nèi)部展開了一場令人發(fā)指的戰(zhàn)爭，由于刺客們把他們可怕的技能用到了這次戰(zhàn)爭中，許多無辜者也因此喪生。刺客庭的古老武庫被打開，可怕的武器們也再次被使用——自從它們被發(fā)現(xiàn)起，帝國元老院便禁止了對于這些武器的使用。基因感應(yīng)神經(jīng)毒氣污染了走廊，而中子彈頭則摧毀了宮殿的整個側(cè)廳。最終，真正的大導(dǎo)師暗殺掉了雅雷克，然后消失在了自我流放中。這一連串的事件導(dǎo)致了刺殺修會的建立——審判庭該分支的具體任務(wù)便是確保刺客庭盡可能忠于高領(lǐng)主們的目標(biāo)。