In Act IV of Hamlet, Laertes demands revenge for his father’s death, King Claudius plots with Laertes to kill Hamlet, and Hamlet announces his return to Denmark. How do these events work together to build suspense? They show that Hamlet will definitely be able to avenge his father's murder. They imply that the mysterious ghost will soon return. They suggest that there will soon be a deadly showdown between Claudius and Hamlet.