Furthermore, this room is too warm with さらに〜

Grammar Explanation: Furthermore with さらに〜

Upon walking in on a murder scene, Conan goes right to work making observations about the blood-covered body and its surroundings. He notes how the room is torn apart save for one upright chair beside the deceased.

コナン:: 「さらに、暑(あつ)すぎるこの部屋(へや)…」; "Furthermore, this room is too warm..."; 「死亡推定時刻(しぼうすいていじこく)をくるわせるためなのか…」; "Is it to confuse the estimated time of death...?"; 「いや、まてよ…　それなら死体(したい)を水(みず)につけた方(ほう)が…」; "No, wait... If that's the case, it would be better to put the corpse in water..."

さらに is used here to provide additional observations.