The Kill Team: Elites expansion is a 144-page softback book that includes the following contents:

• 67 new datasheet introducing a host of new Commanders and special operatives, ranging from Space Marines clad in Terminator armour to the deadly Aspect Warriors of the Asuryani – there are even datasheets for a number of unique Commanders such as Illic Nightspear, Boss Snikrot and the legendary Sly Marbo!
• A new faction in the form of the mighty Adeptus Custodes, featuring Custodian Guard, Allarus Custodians and even a Shield-Captain as a Commander
• Sub-faction rules such as Legion Traits, Regimental Doctrines and Drukhari Obsessions as well as thematic Tactics immerse your kill teams ever deeper into the narrative
• Introduces a new Commander Specialism – Legendary Hunter – complete with skill tree and Tactics
• 11 new missions (3 open play, 4 narrative play and 4 matched play)

You will need the Kill Team Core Manual to use this expansion, as well as the Kill Team: Commanders expansion if you wish to use any of the Commanders datasheets.