At times, Another 48 Hrs. seems less like a sequel to than a parody of the first 48 Hrs., especially when Nick Nolte, repeating his role from the earlier film, begins commenting on the cliched absurdity of the goings on. This time, Nolte risks life, limb and career as he obsessively tries to bring an elusive master criminal known as "The Iceman" to justice. Eddie Murphy, who stole the show in the first 48 Hrs. as the wheeler-dealer convict who becomes Nolte's reluctant partner, is brought into the plotline of the second film when a contract is taken out on his life. The adversarial relationship between Nolte and Murphy, supposedly dissipated by the end of the first film, is revivified in the sequel via a couple of plot devices. Still, Murphy rallies to the occasion, in the process saving Nolte from being thrown off the force. Though not as successful as the first film, Another 48 Hrs. proved that there were still enough Eddie Murphy fans around in 1990 to insure a strong box-office showing.
~ Hal Erickson, All Movie Guide