Cliff-hanger and Cloak-and-dagger

Cliff-hanger noun - Something (as a close contest) that induces much suspense as to its outcome.

Cloak-and-dagger and cliff-hanger are semantically related. In some cases you can replace phrase "Cloak-and-dagger" with "Cliff-hanger", this phrases are similar.

Cloak-and-dagger adjective - Conducted with or marked by hidden aims or methods.

Cliff-hanger and cloak-and-dagger are semantically related. Sometimes you can use "Cliff-hanger" instead a noun phrase "Cloak-and-dagger".