The Cruise: Voyage to Alaska, STV, 8.30pm

IT may not be sun-seekers’ idea of the perfect holiday, but a cruise to Alaska offers passengers the chance to see a wilderness like nowhere else on Earth. But with so many ships competing for passengers, this series shows that the staff of the Star Princess can’t rely on the destination alone – they also have to go the extra mile to offer a five-star experience. The first episode tests just how much they are willing to sacrifice for their customers, as Captain Tuvo has to decide whether to wait for a late passenger and risk the consequences of overstaying their time slot on the dock or leave without her. Meanwhile, shore excursion agent Timothy is getting to grips with his new posting.

Serial Killer with Piers Morgan, STV, 9pm

PIERS Morgan has interviewed several convicted killers for his US-based documentaries, including Mark Riebe last year. His latest unsettling encounter is with Lorenzo Gilyard, who is also known as the Kansas City Strangler. For nearly two decades, beginning in 1977, Gilyard brought fear to the streets of Kansas City, Missouri, raping and murdering vulnerable women before discarding their bodies. It wasn’t until 2003 that DNA evidence linked the victims to Gilyard, a seemingly happily married man who was respected at his job as a sanitation worker. He was tried for seven murders and found guilty of six of them, and is now serving consecutive life sentences with no chance of parole. He continues to protest his innocence and at first seems to have an answer for all of Morgan’s question, but eventually he starts to run out of excuses...

Weinstein: The Inside Story (BBC1, 9pm)

HARVEY Weinstein was once one of the most successful producers in Hollywood, but beneath the glitz and glamour there was a dark story of threats, bullying and allegations of sexual assault. As final preparations are made for this weekend’s 90th Academy Awards, which has been somewhat overshadowed by the scandals hitting the movie business, this one-hour Panorama special investigates Weinstein’s spectacular fall from grace and the extraordinary efforts he made to silence his accusers and keep his secrets hidden.