| BRUTUS | Roman statesman who, with Cassius, led the conspiracy to assassinate Julius Caesar |
| CASSIUS | Roman general who led the conspiracy against Julius Caesar (7) |
| ORSINIPLOT | 1858 conspiracy to assassinate Napoleon III (6,4) |
| CAESAR | The Roman statesman who was assassinated in 44 BC, Julius _ (6) |
| LEPIDUS | Roman statesman who formed the Second Triumvirate with Octavian and Mark Antony |
| NERVA | Roman statesman who became Emperor aged 65 upon the assassination of Domitian (5) |
| CICERO | Roman statesman who opposed Caesar |
| CATO | Roman statesman who opposed Caesar |
| PILOT | The airman is one in the conspiracy (5) |
| SALLUST | Roman historian and politician whose works include The Conspiracy of Catiline |
| WALSINGHAM | Spymaster who uncovered the Babington Plot to assassinate Elizabeth I and employed intelligence workers to decode Mary, Queen of Scots' cipher (10) |
| SCAEVOLA | Cognomen of members of the Gens Mucia, notably Gaius who attempted to assassinate Porsenna |
| OATES | Priest who was pilloried and condemned to life imprisonment for fabricating the supposed Popish Plot conspiracy to kill Charles II (5) |
| GUNPOWDERPLOT | What is the name of the 1605 conspiracy to kill England's James I? (9,4) |
| BABINGTON | When Mary, Queen of Scots wanted to assassinate Queen Elizabeth I, she began exchanging messages with her co-conspirator that used a mixture of codes and ciphers known as a nomenclator. The deciphered |
| EDA | 'The Conspiracy Against Childhood' author LeShan |
| INONIT | Part of the conspiracy (2,2,2) |
| FROMME | Manson "family" member who attempted to assassinate Gerald Ford |
| RICIN | Alkaloid poison derived from castor beans - it was used to assassinate the Bulgarian dissident Georg |
| ELSER | Depicted in 13 Minutes, a carpenter who attempted to assassinate Hitler (5) |
