Read this passage: "He came up again sputtering and clinging to the wood like a rat, but for all his efforts he could not scramble on top. Every time he tried, the barrel rolled round and ducked him under again. It was really empty, and floated light as

Read this passage: 

"He came up again sputtering and clinging to the wood like a rat, but for all his efforts he could not scramble on top. Every time he tried, the barrel rolled round and ducked him under again. It was really empty, and floated light as a cork. Though his ears were full of water, he could hear the elves still singing in the cellar above. Then suddenly the trapdoors fell to with a boom and their voices faded away. He was in the dark tunnel floating in icy water, all alone...." 

Which words best describe the mood this passage creates?

frantic and worrying