Star Trek: Enterprise

Archer and T'Pol encounter the Syrrannites, a radical group hiding in the Vulcan desert, while the NX-01 crew contends with Vulcan power ploys. (S4, ep 8)

Archer, T'Pol and T'Pau attempt to bring the Kir'Shara - an artefact believed to contain Surak's original writings - to the Vulcan capital. (S4, ep 9)

Emory Erickson, Captain Archer's mentor and the man responsible for the transporter, boards Enterprise for a risky experiment. (S4, ep 10)

Trip and Hoshi are taken ill by a mysterious but deadly illness that looks like it will kill them within hours... (S4, ep 11)

Enterprise is travelling to Babel for peace talks with the Andorians when a distress call from Shran is received. (S4, ep 12)

A marauder ship threatens to destabilise the region. Archer has a plan to capture it, but it'll mean unifying the Andorians, Tellarites and Vulcans. (S4, ep 13)

Archer visits Shran's icy homeland to find a species called the Aenar. Are they connected to the marauding destroyer ships in the region? (S4, ep 14)