After cutting and dyeing her hair , Sil take an attraction to Preston , having dreamt of him the previous night . After the team celebrate their apparent victory , she stalk them in their hotel , and they do not recognize her . Arden , who is upset at being single , walk into his room to find Sil waiting there . She have intercourse with Arden , then kill him when he realize who she is . Dan sense that Sil is in the hotel and he alert Preston , Laura , and the rest of the team . She morphs again and escapes and they follow her into the sewers where Fitch is subsequently killed . Sil give birth and Dan find her offspring in a cavern behind the sewers . The child attack him and he kill it . Sil , angered , attack the trio and try to kill Preston and Dan . Preston use a grenade launcher on her , blowing her head off and killing her . The trio leave the area . The last scene show a rat chewing on one of Sil 's severed tentacles ; it start to mutate into a vicious beast and attacks another rat .