Just listening to Mike Buck interview. More info from 50 Undercover's question. Peter Lenkov mentioned that James Caan said during a lunch date how much he is a huge fan of the show and would love to see Danny & Rachel back together. Lenkov has also said that James Caan's appearance on the show may end up being a recurring role.
He also mentions that Catherine may return in more than just 1 episode so her appearance in 2.16 wont be a last goodbye for Steve & Catherine. He also says there will definitely be some sexual tension between the two as well.
You can listen to the full interview here which is over an hour long.
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