Endeavour is shaping up to beat the original episodes of Morse. This one has a story ideally tailored to Morse with crossword clues and opera. This might seem hackneyed but it works very well and is satisfying and clear. The scenes filmed on the roofs at Trinity College are exciting. Best of all is the father-son relationship that is growing up between Morse and Thursday. It is genuinely touching, particularly at the close of the episode, before the famous theme music comes in. Shaun Evans is excellent in the role of Morse, even though his appearance, voice and general demeanour make it impossible to imagine him ever turning into anything resembling John Thaw.
(Questionable aspects of the show are the extremely clichéd you're-off- the-case boss, played by Anton Lesser, and the friendly and helpful Constable Strange, who it's hard to imagine becoming the you're-off-the-case-matey boss of Morse's later years. Also, would a music lover like Morse slam down the lid of his record player while it was playing an expensive LP? However, these are minor quibbles.)
It's great. Watch it.