[Matt]

Here's all the spoilers from the second episode:

Tom used the Power of Veto on himself and Kat was the replacement nominee

Kat was evicted by a vote of eleven to one (Liza was the sole vote to evict Emmett)

The first HoH competition is an endurance challenge called 'Lumberjack and Jill' - the houseguests each have a massive tree to cling on to, and the last person to drop wins.